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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.sysds.runtime.util</a></div>
<h2 title="Class DataConverter" class="title">Class DataConverter</h2>
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<li><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">java.lang.Object</a></li>
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<pre>public class <span class="typeNameLabel">DataConverter</span>
extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></pre>
<div class="block">This class provides methods to read and write matrix blocks from to HDFS using different data formats.
Those functionalities are used especially for CP read/write and exporting in-memory matrices to HDFS
(before executing MR jobs).</div>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">DataConverter</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><code>static org.apache.commons.math3.linear.Array2DRowRealMatrix</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToArray2DRowRealMatrix(org.apache.sysds.runtime.matrix.data.MatrixBlock)">convertToArray2DRowRealMatrix</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</code></th>
<td class="colLast">
<div class="block">Helper method that converts SystemDS matrix variable (<code>varname</code>) into a Array2DRowRealMatrix format,
which is useful in invoking Apache CommonsMath.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static org.apache.commons.math3.linear.BlockRealMatrix</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToBlockRealMatrix(org.apache.sysds.runtime.matrix.data.MatrixBlock)">convertToBlockRealMatrix</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>static boolean[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToBooleanVector(org.apache.sysds.runtime.matrix.data.MatrixBlock)">convertToBooleanVector</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>static <a href="../data/DenseBlock.html" title="class in org.apache.sysds.runtime.data">DenseBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToDenseBlock(org.apache.sysds.runtime.matrix.data.MatrixBlock)">convertToDenseBlock</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static <a href="../data/DenseBlock.html" title="class in org.apache.sysds.runtime.data">DenseBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToDenseBlock(org.apache.sysds.runtime.matrix.data.MatrixBlock,boolean)">convertToDenseBlock</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb,
boolean&nbsp;deep)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Double.html?is-external=true" title="class or interface in java.lang" class="externalLink">Double</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToDoubleList(org.apache.sysds.runtime.matrix.data.MatrixBlock)">convertToDoubleList</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>static double[][]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToDoubleMatrix(org.apache.sysds.runtime.matrix.data.MatrixBlock)">convertToDoubleMatrix</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</code></th>
<td class="colLast">
<div class="block">Creates a two-dimensional double matrix of the input matrix block.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>static double[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToDoubleVector(org.apache.sysds.runtime.matrix.data.MatrixBlock)">convertToDoubleVector</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>static double[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToDoubleVector(org.apache.sysds.runtime.matrix.data.MatrixBlock,boolean)">convertToDoubleVector</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb,
boolean&nbsp;deep)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>static double[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToDoubleVector(org.apache.sysds.runtime.matrix.data.MatrixBlock,boolean,boolean)">convertToDoubleVector</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb,
boolean&nbsp;deep,
boolean&nbsp;allowNull)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>static <a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToFrameBlock(java.lang.String%5B%5D%5B%5D)">convertToFrameBlock</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>[][]&nbsp;data)</code></th>
<td class="colLast">
<div class="block">Converts a two dimensions string array into a frame block of
value type string.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>static <a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToFrameBlock(java.lang.String%5B%5D%5B%5D,org.apache.sysds.common.Types.ValueType%5B%5D)">convertToFrameBlock</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>[][]&nbsp;data,
<a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>static <a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToFrameBlock(java.lang.String%5B%5D%5B%5D,org.apache.sysds.common.Types.ValueType%5B%5D,java.lang.String%5B%5D)">convertToFrameBlock</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>[][]&nbsp;data,
<a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>[]&nbsp;colnames)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>static <a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToFrameBlock(org.apache.sysds.runtime.matrix.data.MatrixBlock)">convertToFrameBlock</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</code></th>
<td class="colLast">
<div class="block">Converts a matrix block into a frame block of value type double.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>static <a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToFrameBlock(org.apache.sysds.runtime.matrix.data.MatrixBlock,int)">convertToFrameBlock</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb,
int&nbsp;k)</code></th>
<td class="colLast">
<div class="block">Converts a matrix block into a frame block of value type double.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>static <a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToFrameBlock(org.apache.sysds.runtime.matrix.data.MatrixBlock,org.apache.sysds.common.Types.ValueType)">convertToFrameBlock</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb,
<a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt)</code></th>
<td class="colLast">
<div class="block">Converts a matrix block into a frame block of value type given.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>static <a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToFrameBlock(org.apache.sysds.runtime.matrix.data.MatrixBlock,org.apache.sysds.common.Types.ValueType%5B%5D)">convertToFrameBlock</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb,
<a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema)</code></th>
<td class="colLast">
<div class="block">Converts a matrix block into a frame block of with the given schema</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>static <a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToFrameBlock(org.apache.sysds.runtime.matrix.data.MatrixBlock,org.apache.sysds.common.Types.ValueType%5B%5D,int)">convertToFrameBlock</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb,
<a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema,
int&nbsp;k)</code></th>
<td class="colLast">
<div class="block">Converts a matrix block into a frame block of with the given schema</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>static <a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToFrameBlock(org.apache.sysds.runtime.matrix.data.MatrixBlock,org.apache.sysds.common.Types.ValueType,int)">convertToFrameBlock</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb,
<a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
int&nbsp;k)</code></th>
<td class="colLast">
<div class="block">Converts a matrix block into a frame block of a given value type.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>static int[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToIntVector(org.apache.sysds.runtime.matrix.data.MatrixBlock)">convertToIntVector</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code>static long[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToLongVector(org.apache.sysds.runtime.matrix.data.MatrixBlock)">convertToLongVector</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToMatrixBlock(double%5B%5D%5B%5D)">convertToMatrixBlock</a></span>&#8203;(double[][]&nbsp;data)</code></th>
<td class="colLast">
<div class="block">Creates a dense Matrix Block and copies the given double matrix into it.</div>
</td>
</tr>
<tr id="i22" class="altColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToMatrixBlock(double%5B%5D,boolean)">convertToMatrixBlock</a></span>&#8203;(double[]&nbsp;data,
boolean&nbsp;columnVector)</code></th>
<td class="colLast">
<div class="block">Creates a dense Matrix Block and copies the given double vector into it.</div>
</td>
</tr>
<tr id="i23" class="rowColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToMatrixBlock(int%5B%5D%5B%5D)">convertToMatrixBlock</a></span>&#8203;(int[][]&nbsp;data)</code></th>
<td class="colLast">
<div class="block">Converts an Integer matrix to an MatrixBlock</div>
</td>
</tr>
<tr id="i24" class="altColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToMatrixBlock(java.util.HashMap)">convertToMatrixBlock</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html?is-external=true" title="class or interface in java.util" class="externalLink">HashMap</a>&lt;<a href="../matrix/data/MatrixIndexes.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixIndexes</a>,&#8203;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Double.html?is-external=true" title="class or interface in java.lang" class="externalLink">Double</a>&gt;&nbsp;map)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i25" class="rowColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToMatrixBlock(java.util.HashMap,int,int)">convertToMatrixBlock</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html?is-external=true" title="class or interface in java.util" class="externalLink">HashMap</a>&lt;<a href="../matrix/data/MatrixIndexes.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixIndexes</a>,&#8203;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Double.html?is-external=true" title="class or interface in java.lang" class="externalLink">Double</a>&gt;&nbsp;map,
int&nbsp;rlen,
int&nbsp;clen)</code></th>
<td class="colLast">
<div class="block">NOTE: this method also ensures the specified matrix dimensions</div>
</td>
</tr>
<tr id="i26" class="altColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToMatrixBlock(org.apache.commons.math3.linear.RealMatrix)">convertToMatrixBlock</a></span>&#8203;(org.apache.commons.math3.linear.RealMatrix&nbsp;rm)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i27" class="rowColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToMatrixBlock(org.apache.sysds.runtime.frame.data.FrameBlock)">convertToMatrixBlock</a></span>&#8203;(<a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a>&nbsp;frame)</code></th>
<td class="colLast">
<div class="block">Converts a frame block with arbitrary schema into a matrix block.</div>
</td>
</tr>
<tr id="i28" class="altColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToMatrixBlock(org.apache.sysds.runtime.matrix.data.CTableMap)">convertToMatrixBlock</a></span>&#8203;(<a href="../matrix/data/CTableMap.html" title="class in org.apache.sysds.runtime.matrix.data">CTableMap</a>&nbsp;map)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i29" class="rowColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToMatrixBlock(org.apache.sysds.runtime.matrix.data.CTableMap,int,int)">convertToMatrixBlock</a></span>&#8203;(<a href="../matrix/data/CTableMap.html" title="class in org.apache.sysds.runtime.matrix.data">CTableMap</a>&nbsp;map,
int&nbsp;rlen,
int&nbsp;clen)</code></th>
<td class="colLast">
<div class="block">NOTE: this method also ensures the specified matrix dimensions</div>
</td>
</tr>
<tr id="i30" class="altColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToMatrixBlockPartitions(org.apache.sysds.runtime.matrix.data.MatrixBlock,boolean)">convertToMatrixBlockPartitions</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb,
boolean&nbsp;colwise)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i31" class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>[][]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToStringFrame(org.apache.sysds.runtime.frame.data.FrameBlock)">convertToStringFrame</a></span>&#8203;(<a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a>&nbsp;frame)</code></th>
<td class="colLast">
<div class="block">Converts a frame block with arbitrary schema into a two dimensional
string array.</div>
</td>
</tr>
<tr id="i32" class="altColor">
<td class="colFirst"><code>static <a href="../data/TensorBlock.html" title="class in org.apache.sysds.runtime.data">TensorBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertToTensorBlock(org.apache.sysds.runtime.matrix.data.MatrixBlock,org.apache.sysds.common.Types.ValueType,boolean)">convertToTensorBlock</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb,
<a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
boolean&nbsp;toBasicTensor)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i33" class="rowColor">
<td class="colFirst"><code>static int[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertVectorToIndexList(org.apache.sysds.runtime.matrix.data.MatrixBlock)">convertVectorToIndexList</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i34" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copyToDoubleVector(org.apache.sysds.runtime.matrix.data.MatrixBlock,double%5B%5D,int)">copyToDoubleVector</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb,
double[]&nbsp;dest,
int&nbsp;destPos)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i35" class="rowColor">
<td class="colFirst"><code>static int[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTensorDimensions(org.apache.sysds.runtime.controlprogram.context.ExecutionContext,org.apache.sysds.runtime.instructions.cp.CPOperand)">getTensorDimensions</a></span>&#8203;(<a href="../controlprogram/context/ExecutionContext.html" title="class in org.apache.sysds.runtime.controlprogram.context">ExecutionContext</a>&nbsp;ec,
<a href="../instructions/cp/CPOperand.html" title="class in org.apache.sysds.runtime.instructions.cp">CPOperand</a>&nbsp;dims)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i36" class="altColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readMatrixFromHDFS(java.lang.String,org.apache.sysds.common.Types.FileFormat,long,long,int)">readMatrixFromHDFS</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
long&nbsp;rlen,
long&nbsp;clen,
int&nbsp;blen)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i37" class="rowColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readMatrixFromHDFS(java.lang.String,org.apache.sysds.common.Types.FileFormat,long,long,int,boolean)">readMatrixFromHDFS</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
long&nbsp;rlen,
long&nbsp;clen,
int&nbsp;blen,
boolean&nbsp;localFS)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i38" class="altColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readMatrixFromHDFS(java.lang.String,org.apache.sysds.common.Types.FileFormat,long,long,int,long)">readMatrixFromHDFS</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
long&nbsp;rlen,
long&nbsp;clen,
int&nbsp;blen,
long&nbsp;expectedNnz)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i39" class="rowColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readMatrixFromHDFS(java.lang.String,org.apache.sysds.common.Types.FileFormat,long,long,int,long,boolean)">readMatrixFromHDFS</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
long&nbsp;rlen,
long&nbsp;clen,
int&nbsp;blen,
long&nbsp;expectedNnz,
boolean&nbsp;localFS)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i40" class="altColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readMatrixFromHDFS(java.lang.String,org.apache.sysds.common.Types.FileFormat,long,long,int,long,org.apache.sysds.runtime.io.FileFormatProperties)">readMatrixFromHDFS</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
long&nbsp;rlen,
long&nbsp;clen,
int&nbsp;blen,
long&nbsp;expectedNnz,
<a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i41" class="rowColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readMatrixFromHDFS(org.apache.sysds.runtime.io.ReadProperties)">readMatrixFromHDFS</a></span>&#8203;(<a href="../io/ReadProperties.html" title="class in org.apache.sysds.runtime.io">ReadProperties</a>&nbsp;prop)</code></th>
<td class="colLast">
<div class="block">Core method for reading matrices in format textcell, matrixmarket, binarycell, or binaryblock
from HDFS into main memory.</div>
</td>
</tr>
<tr id="i42" class="altColor">
<td class="colFirst"><code>static <a href="../data/TensorBlock.html" title="class in org.apache.sysds.runtime.data">TensorBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readTensorFromHDFS(java.lang.String,org.apache.sysds.common.Types.FileFormat,long%5B%5D,int,org.apache.sysds.common.Types.ValueType%5B%5D)">readTensorFromHDFS</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
long[]&nbsp;dims,
int&nbsp;blen,
<a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i43" class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/BitSet.html?is-external=true" title="class or interface in java.util" class="externalLink">BitSet</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toBitSet(double%5B%5D)">toBitSet</a></span>&#8203;(double[]&nbsp;data)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i44" class="altColor">
<td class="colFirst"><code>static double[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toDouble(float%5B%5D)">toDouble</a></span>&#8203;(float[]&nbsp;data)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i45" class="rowColor">
<td class="colFirst"><code>static double[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toDouble(int%5B%5D)">toDouble</a></span>&#8203;(int[]&nbsp;data)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i46" class="altColor">
<td class="colFirst"><code>static double[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toDouble(long%5B%5D)">toDouble</a></span>&#8203;(long[]&nbsp;data)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i47" class="rowColor">
<td class="colFirst"><code>static double[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toDouble(java.lang.String%5B%5D)">toDouble</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>[]&nbsp;data)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i48" class="altColor">
<td class="colFirst"><code>static double[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toDouble(java.util.BitSet,int)">toDouble</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/BitSet.html?is-external=true" title="class or interface in java.util" class="externalLink">BitSet</a>&nbsp;data,
int&nbsp;len)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i49" class="rowColor">
<td class="colFirst"><code>static float[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toFloat(double%5B%5D)">toFloat</a></span>&#8203;(double[]&nbsp;data)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i50" class="altColor">
<td class="colFirst"><code>static int[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toInt(double%5B%5D)">toInt</a></span>&#8203;(double[]&nbsp;data)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i51" class="rowColor">
<td class="colFirst"><code>static long[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toLong(double%5B%5D)">toLong</a></span>&#8203;(double[]&nbsp;data)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i52" class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString(double%5B%5D)">toString</a></span>&#8203;(double[]&nbsp;data)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i53" class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString(org.apache.sysds.runtime.data.TensorBlock)">toString</a></span>&#8203;(<a href="../data/TensorBlock.html" title="class in org.apache.sysds.runtime.data">TensorBlock</a>&nbsp;tb)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i54" class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString(org.apache.sysds.runtime.data.TensorBlock,boolean,java.lang.String,java.lang.String,java.lang.String,java.lang.String,int,int,int)">toString</a></span>&#8203;(<a href="../data/TensorBlock.html" title="class in org.apache.sysds.runtime.data">TensorBlock</a>&nbsp;tb,
boolean&nbsp;sparse,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;separator,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;lineseparator,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;leftBorder,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;rightBorder,
int&nbsp;rowsToPrint,
int&nbsp;colsToPrint,
int&nbsp;decimal)</code></th>
<td class="colLast">
<div class="block">Returns a string representation of a tensor</div>
</td>
</tr>
<tr id="i55" class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString(org.apache.sysds.runtime.frame.data.FrameBlock)">toString</a></span>&#8203;(<a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a>&nbsp;fb)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i56" class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString(org.apache.sysds.runtime.frame.data.FrameBlock,boolean,java.lang.String,java.lang.String,int,int,int)">toString</a></span>&#8203;(<a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a>&nbsp;fb,
boolean&nbsp;sparse,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;separator,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;lineseparator,
int&nbsp;rowsToPrint,
int&nbsp;colsToPrint,
int&nbsp;decimal)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i57" class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString(org.apache.sysds.runtime.instructions.cp.ListObject,int,int,boolean,java.lang.String,java.lang.String,int,int,int)">toString</a></span>&#8203;(<a href="../instructions/cp/ListObject.html" title="class in org.apache.sysds.runtime.instructions.cp">ListObject</a>&nbsp;list,
int&nbsp;rows,
int&nbsp;cols,
boolean&nbsp;sparse,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;separator,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;lineSeparator,
int&nbsp;rowsToPrint,
int&nbsp;colsToPrint,
int&nbsp;decimal)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i58" class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString(org.apache.sysds.runtime.matrix.data.MatrixBlock)">toString</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i59" class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
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boolean&nbsp;sparse,
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int&nbsp;rowsToPrint,
int&nbsp;colsToPrint,
int&nbsp;decimal)</code></th>
<td class="colLast">
<div class="block">Returns a string representation of a matrix</div>
</td>
</tr>
<tr id="i60" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeMatrixToHDFS(org.apache.sysds.runtime.matrix.data.MatrixBlock,java.lang.String,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.meta.DataCharacteristics)">writeMatrixToHDFS</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mat,
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<a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i61" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeMatrixToHDFS(org.apache.sysds.runtime.matrix.data.MatrixBlock,java.lang.String,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.meta.DataCharacteristics,int,org.apache.sysds.runtime.io.FileFormatProperties)">writeMatrixToHDFS</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mat,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
<a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
int&nbsp;replication,
<a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i62" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeMatrixToHDFS(org.apache.sysds.runtime.matrix.data.MatrixBlock,java.lang.String,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.meta.DataCharacteristics,int,org.apache.sysds.runtime.io.FileFormatProperties,boolean)">writeMatrixToHDFS</a></span>&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mat,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
<a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
int&nbsp;replication,
<a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties,
boolean&nbsp;diag)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i63" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeTensorToHDFS(org.apache.sysds.runtime.data.TensorBlock,java.lang.String,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.meta.DataCharacteristics)">writeTensorToHDFS</a></span>&#8203;(<a href="../data/TensorBlock.html" title="class in org.apache.sysds.runtime.data">TensorBlock</a>&nbsp;tensor,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
<a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc)</code></th>
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<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
<a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public static&nbsp;void&nbsp;writeMatrixToHDFS&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mat,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
<a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
int&nbsp;replication,
<a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public static&nbsp;void&nbsp;writeMatrixToHDFS&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mat,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
<a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
int&nbsp;replication,
<a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties,
boolean&nbsp;diag)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public static&nbsp;void&nbsp;writeTensorToHDFS&#8203;(<a href="../data/TensorBlock.html" title="class in org.apache.sysds.runtime.data">TensorBlock</a>&nbsp;tensor,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
<a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public static&nbsp;<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;readMatrixFromHDFS&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
long&nbsp;rlen,
long&nbsp;clen,
int&nbsp;blen,
boolean&nbsp;localFS)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
long&nbsp;rlen,
long&nbsp;clen,
int&nbsp;blen)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
long&nbsp;rlen,
long&nbsp;clen,
int&nbsp;blen,
long&nbsp;expectedNnz)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
long&nbsp;rlen,
long&nbsp;clen,
int&nbsp;blen,
long&nbsp;expectedNnz,
boolean&nbsp;localFS)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
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long&nbsp;clen,
int&nbsp;blen,
long&nbsp;expectedNnz,
<a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public static&nbsp;<a href="../data/TensorBlock.html" title="class in org.apache.sysds.runtime.data">TensorBlock</a>&nbsp;readTensorFromHDFS&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
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long[]&nbsp;dims,
int&nbsp;blen,
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throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public static&nbsp;<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;readMatrixFromHDFS&#8203;(<a href="../io/ReadProperties.html" title="class in org.apache.sysds.runtime.io">ReadProperties</a>&nbsp;prop)
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<div class="block">Core method for reading matrices in format textcell, matrixmarket, binarycell, or binaryblock
from HDFS into main memory. For expected dense matrices we directly copy value- or block-at-a-time
into the target matrix. In contrast, for sparse matrices, we append (column-value)-pairs and do a
final sort if required in order to prevent large reorg overheads and increased memory consumption
in case of unordered inputs.
DENSE MxN input:
* best/average/worst: O(M*N)
SPARSE MxN input
* best (ordered, or binary block w/ clen&lt;=blen): O(M*N)
* average (unordered): O(M*N*log(N))
* worst (descending order per row): O(M * N^2)
NOTE: providing an exact estimate of 'expected sparsity' can prevent a full copy of the result
matrix block (required for changing sparse-&gt;dense, or vice versa)</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>prop</code> - read properties</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>matrix block</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>mb</code> - matrix block</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>2d double array</dd>
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<div class="block">Creates a dense Matrix Block and copies the given double matrix into it.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>data</code> - 2d double array</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>matrix block</dd>
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<div class="block">Converts an Integer matrix to an MatrixBlock</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>data</code> - Int matrix input that is converted to double MatrixBlock</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The matrixBlock constructed.</dd>
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boolean&nbsp;columnVector)</pre>
<div class="block">Creates a dense Matrix Block and copies the given double vector into it.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>data</code> - double array</dd>
<dd><code>columnVector</code> - if true, create matrix with single column. if false, create matrix with single row</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>matrix block</dd>
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int&nbsp;rlen,
int&nbsp;clen)</pre>
<div class="block">NOTE: this method also ensures the specified matrix dimensions</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>map</code> - map of matrix index keys and double values</dd>
<dd><code>rlen</code> - number of rows</dd>
<dd><code>clen</code> - number of columns</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>matrix block</dd>
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int&nbsp;rlen,
int&nbsp;clen)</pre>
<div class="block">NOTE: this method also ensures the specified matrix dimensions</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>map</code> - ?</dd>
<dd><code>rlen</code> - number of rows</dd>
<dd><code>clen</code> - number of columns</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>matrix block</dd>
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<div class="block">Converts a frame block with arbitrary schema into a matrix block.
Since matrix block only supports value type double, we do a best
effort conversion of non-double types which might result in errors
for non-numerical data.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>frame</code> - frame block</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>matrix block</dd>
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<div class="block">Converts a frame block with arbitrary schema into a two dimensional
string array.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>frame</code> - frame block</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>2d string array</dd>
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<div class="block">Converts a two dimensions string array into a frame block of
value type string. If the given array is null or of length 0,
we return an empty frame block.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>data</code> - 2d string array</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>frame block</dd>
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<div class="block">Converts a matrix block into a frame block of value type double.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>mb</code> - matrix block</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>frame block of type double</dd>
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<div class="block">Converts a matrix block into a frame block of value type double.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>mb</code> - matrix block</dd>
<dd><code>k</code> - parallelization degree</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>frame block of type double</dd>
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<div class="block">Converts a matrix block into a frame block of value type given.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>mb</code> - matrix block</dd>
<dd><code>vt</code> - value type target</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>frame block of type given</dd>
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int&nbsp;k)</pre>
<div class="block">Converts a matrix block into a frame block of a given value type.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>mb</code> - matrix block</dd>
<dd><code>vt</code> - value type</dd>
<dd><code>k</code> - parallelization degree</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a return frame block with the given schema</dd>
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<div class="block">Converts a matrix block into a frame block of with the given schema</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>mb</code> - matrix block</dd>
<dd><code>schema</code> - schema</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a return frame block with the given schema</dd>
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int&nbsp;k)</pre>
<div class="block">Converts a matrix block into a frame block of with the given schema</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>mb</code> - matrix block</dd>
<dd><code>schema</code> - schema</dd>
<dd><code>k</code> - parallelization degree</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a return frame block with the given schema</dd>
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<pre class="methodSignature">public static&nbsp;org.apache.commons.math3.linear.Array2DRowRealMatrix&nbsp;convertToArray2DRowRealMatrix&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</pre>
<div class="block">Helper method that converts SystemDS matrix variable (<code>varname</code>) into a Array2DRowRealMatrix format,
which is useful in invoking Apache CommonsMath.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>mb</code> - matrix object</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>matrix as a commons-math3 Array2DRowRealMatrix</dd>
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<pre class="methodSignature">public static&nbsp;org.apache.commons.math3.linear.BlockRealMatrix&nbsp;convertToBlockRealMatrix&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</pre>
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<pre class="methodSignature">public static&nbsp;<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;convertToMatrixBlock&#8203;(org.apache.commons.math3.linear.RealMatrix&nbsp;rm)</pre>
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<pre class="methodSignature">public static&nbsp;void&nbsp;copyToDoubleVector&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb,
double[]&nbsp;dest,
int&nbsp;destPos)</pre>
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<pre class="methodSignature">public static&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;toString&#8203;(<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb,
boolean&nbsp;sparse,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;separator,
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int&nbsp;rowsToPrint,
int&nbsp;colsToPrint,
int&nbsp;decimal)</pre>
<div class="block">Returns a string representation of a matrix</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>mb</code> - matrix block</dd>
<dd><code>sparse</code> - if true, string will contain a table with row index, col index, value (where value != 0.0)
otherwise it will be a rectangular string with all values of the matrix block</dd>
<dd><code>separator</code> - Separator string between each element in a row, or between the columns in sparse format</dd>
<dd><code>lineseparator</code> - Separator string between each row</dd>
<dd><code>rowsToPrint</code> - maximum number of rows to print, -1 for all</dd>
<dd><code>colsToPrint</code> - maximum number of columns to print, -1 for all</dd>
<dd><code>decimal</code> - number of decimal places to print, -1 for default</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>matrix as a string</dd>
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<pre class="methodSignature">public static&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;toString&#8203;(<a href="../data/TensorBlock.html" title="class in org.apache.sysds.runtime.data">TensorBlock</a>&nbsp;tb,
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<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;separator,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;lineseparator,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;leftBorder,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;rightBorder,
int&nbsp;rowsToPrint,
int&nbsp;colsToPrint,
int&nbsp;decimal)</pre>
<div class="block">Returns a string representation of a tensor</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>tb</code> - tensor block</dd>
<dd><code>sparse</code> - if true, string will contain a table with row index, col index, value (where value != 0.0)
otherwise it will be a rectangular string with all values of the tensor block</dd>
<dd><code>separator</code> - Separator string between each element in a row, or between the columns in sparse format</dd>
<dd><code>lineseparator</code> - Separator string between each row</dd>
<dd><code>leftBorder</code> - Characters placed at the start of a new dimension level</dd>
<dd><code>rightBorder</code> - Characters placed at the end of a new dimension level</dd>
<dd><code>rowsToPrint</code> - maximum number of rows to print, -1 for all</dd>
<dd><code>colsToPrint</code> - maximum number of columns to print, -1 for all</dd>
<dd><code>decimal</code> - number of decimal places to print, -1 for default</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>tensor as a string</dd>
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boolean&nbsp;sparse,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;separator,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;lineseparator,
int&nbsp;rowsToPrint,
int&nbsp;colsToPrint,
int&nbsp;decimal)</pre>
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int&nbsp;rows,
int&nbsp;cols,
boolean&nbsp;sparse,
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<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;lineSeparator,
int&nbsp;rowsToPrint,
int&nbsp;colsToPrint,
int&nbsp;decimal)</pre>
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<a href="../instructions/cp/CPOperand.html" title="class in org.apache.sysds.runtime.instructions.cp">CPOperand</a>&nbsp;dims)</pre>
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int&nbsp;len)</pre>
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