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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.sis.referencing.operation.matrix</a></div>
<h2 title="Class Matrix3" class="title">Class Matrix3</h2>
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<li><a href="MatrixSIS.html" title="class in org.apache.sis.referencing.operation.matrix">MatrixSIS</a></li>
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<dt>All Implemented Interfaces:</dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io" class="externalLink">Serializable</a></code>, <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Cloneable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Cloneable</a></code>, <code><a href="../../../util/LenientComparable.html" title="interface in org.apache.sis.util">Lenient­Comparable</a></code>, <code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/Matrix.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">Matrix</a></code></dd>
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<pre>public final class <span class="typeNameLabel">Matrix3</span>
extends <a href="MatrixSIS.html" title="class in org.apache.sis.referencing.operation.matrix">MatrixSIS</a></pre>
<div class="block">A matrix of fixed <a href="#SIZE">3</a>×<a href="#SIZE">3</a> size.
The matrix members are:
<blockquote><pre> ┌ ┐
<a href="#m00">m00</a> <a href="#m01">m01</a> <a href="#m02">m02</a>
<a href="#m10">m10</a> <a href="#m11">m11</a> <a href="#m12">m12</a>
<a href="#m20">m20</a> <a href="#m21">m21</a> <a href="#m22">m22</a>
└ ┘</pre></blockquote></div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>0.4</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="Matrix1.html" title="class in org.apache.sis.referencing.operation.matrix"><code>Matrix1</code></a>,
<a href="Matrix2.html" title="class in org.apache.sis.referencing.operation.matrix"><code>Matrix2</code></a>,
<a href="Matrix4.html" title="class in org.apache.sis.referencing.operation.matrix"><code>Matrix4</code></a>,
<a href="../../../../../../serialized-form.html#org.apache.sis.referencing.operation.matrix.Matrix3">Serialized Form</a></dd>
<p><font size="-1">Defined in the <code>sis-referencing</code> module</font></p>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#m00">m00</a></span></code></th>
<td class="colLast">
<div class="block">The first matrix element in the first row.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#m01">m01</a></span></code></th>
<td class="colLast">
<div class="block">The second matrix element in the first row.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#m02">m02</a></span></code></th>
<td class="colLast">
<div class="block">The third matrix element in the first row.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#m10">m10</a></span></code></th>
<td class="colLast">
<div class="block">The first matrix element in the second row.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#m11">m11</a></span></code></th>
<td class="colLast">
<div class="block">The second matrix element in the second row.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#m12">m12</a></span></code></th>
<td class="colLast">
<div class="block">The third matrix element in the second row.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#m20">m20</a></span></code></th>
<td class="colLast">
<div class="block">The first matrix element in the third row.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#m21">m21</a></span></code></th>
<td class="colLast">
<div class="block">The second matrix element in the third row.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#m22">m22</a></span></code></th>
<td class="colLast">
<div class="block">The third matrix element in the third row.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#SIZE">SIZE</a></span></code></th>
<td class="colLast">
<div class="block">The matrix size, which is 3.</div>
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<h3>Constructor Summary</h3>
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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>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">Matrix3</a></span>()</code></th>
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<div class="block">Creates a new identity matrix.</div>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(double%5B%5D)">Matrix3</a></span>&#8203;(double[]&nbsp;elements)</code></th>
<td class="colLast">
<div class="block">Creates a new matrix initialized to the specified values.</div>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(double,double,double,double,double,double,double,double,double)">Matrix3</a></span>&#8203;(double&nbsp;m00,
double&nbsp;m01,
double&nbsp;m02,
double&nbsp;m10,
double&nbsp;m11,
double&nbsp;m12,
double&nbsp;m20,
double&nbsp;m21,
double&nbsp;m22)</code></th>
<td class="colLast">
<div class="block">Creates a new matrix initialized to the specified values.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>static <a href="Matrix3.html" title="class in org.apache.sis.referencing.operation.matrix">Matrix3</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#castOrCopy(org.opengis.referencing.operation.Matrix)">castOrCopy</a></span>&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/Matrix.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">Matrix</a>&nbsp;matrix)</code></th>
<td class="colLast">
<div class="block">Casts or copies the given matrix to a <code>Matrix3</code> implementation.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getElement(int,int)">getElement</a></span>&#8203;(int&nbsp;row,
int&nbsp;column)</code></th>
<td class="colLast">
<div class="block">Retrieves the value at the specified row and column of this matrix.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>double[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getElements()">getElements</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns all matrix elements in a flat, row-major (column indices vary fastest) array.</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getNumCol()">getNumCol</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the number of columns in this matrix, which is always <a href="#SIZE">3</a> in this implementation.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getNumRow()">getNumRow</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the number of rows in this matrix, which is always <a href="#SIZE">3</a> in this implementation.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isAffine()">isAffine</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns <code>true</code> if this matrix represents an affine transform.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isIdentity()">isIdentity</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns <code>true</code> if this matrix is an identity matrix.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setElement(int,int,double)">setElement</a></span>&#8203;(int&nbsp;row,
int&nbsp;column,
double&nbsp;value)</code></th>
<td class="colLast">
<div class="block">Modifies the value at the specified row and column of this matrix.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setElements(double%5B%5D)">setElements</a></span>&#8203;(double[]&nbsp;elements)</code></th>
<td class="colLast">
<div class="block">Sets all matrix elements from a flat, row-major (column indices vary fastest) array.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#transpose()">transpose</a></span>()</code></th>
<td class="colLast">
<div class="block">Sets the value of this matrix to its transpose.</div>
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<h3>Methods inherited from class&nbsp;<a href="MatrixSIS.html" title="class in org.apache.sis.referencing.operation.matrix">MatrixSIS</a></h3>
<code><a href="MatrixSIS.html#clone()">clone</a>, <a href="MatrixSIS.html#convertAfter(int,java.lang.Number,java.lang.Number)">convert­After</a>, <a href="MatrixSIS.html#convertBefore(int,java.lang.Number,java.lang.Number)">convert­Before</a>, <a href="MatrixSIS.html#equals(java.lang.Object)">equals</a>, <a href="MatrixSIS.html#equals(java.lang.Object,org.apache.sis.util.ComparisonMode)">equals</a>, <a href="MatrixSIS.html#equals(org.opengis.referencing.operation.Matrix,double)">equals</a>, <a href="MatrixSIS.html#getNumber(int,int)">get­Number</a>, <a href="MatrixSIS.html#hashCode()">hash­Code</a>, <a href="MatrixSIS.html#inverse()">inverse</a>, <a href="MatrixSIS.html#multiply(double%5B%5D)">multiply</a>, <a href="MatrixSIS.html#multiply(org.opengis.referencing.operation.Matrix)">multiply</a>, <a href="MatrixSIS.html#normalizeColumns()">normalize­Columns</a>, <a href="MatrixSIS.html#removeColumns(int,int)">remove­Columns</a>, <a href="MatrixSIS.html#removeRows(int,int)">remove­Rows</a>, <a href="MatrixSIS.html#setMatrix(org.opengis.referencing.operation.Matrix)">set­Matrix</a>, <a href="MatrixSIS.html#setNumber(int,int,java.lang.Number)">set­Number</a>, <a href="MatrixSIS.html#solve(org.opengis.referencing.operation.Matrix)">solve</a>, <a href="MatrixSIS.html#toString()">to­String</a>, <a href="MatrixSIS.html#translate(double%5B%5D)">translate</a></code></li>
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<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">get­Class</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notify­All</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></li>
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<h3>Field Detail</h3>
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<h4>SIZE</h4>
<pre>public static final&nbsp;int SIZE</pre>
<div class="block">The matrix size, which is 3.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../constant-values.html#org.apache.sis.referencing.operation.matrix.Matrix3.SIZE">Constant Field Values</a></dd>
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<h4>m00</h4>
<pre>public&nbsp;double m00</pre>
<div class="block">The first matrix element in the first row.</div>
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<h4>m01</h4>
<pre>public&nbsp;double m01</pre>
<div class="block">The second matrix element in the first row.</div>
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<h4>m02</h4>
<pre>public&nbsp;double m02</pre>
<div class="block">The third matrix element in the first row.</div>
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<h4>m10</h4>
<pre>public&nbsp;double m10</pre>
<div class="block">The first matrix element in the second row.</div>
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<h4>m11</h4>
<pre>public&nbsp;double m11</pre>
<div class="block">The second matrix element in the second row.</div>
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<pre>public&nbsp;double m12</pre>
<div class="block">The third matrix element in the second row.</div>
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<pre>public&nbsp;double m20</pre>
<div class="block">The first matrix element in the third row.</div>
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<pre>public&nbsp;double m21</pre>
<div class="block">The second matrix element in the third row.</div>
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<pre>public&nbsp;double m22</pre>
<div class="block">The third matrix element in the third row.</div>
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<h4>Matrix3</h4>
<pre>public&nbsp;Matrix3()</pre>
<div class="block">Creates a new identity matrix.</div>
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<h4>Matrix3</h4>
<pre>public&nbsp;Matrix3&#8203;(double&nbsp;m00,
double&nbsp;m01,
double&nbsp;m02,
double&nbsp;m10,
double&nbsp;m11,
double&nbsp;m12,
double&nbsp;m20,
double&nbsp;m21,
double&nbsp;m22)</pre>
<div class="block">Creates a new matrix initialized to the specified values.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>m00</code> - the first matrix element in the first row.</dd>
<dd><code>m01</code> - the second matrix element in the first row.</dd>
<dd><code>m02</code> - the third matrix element in the first row.</dd>
<dd><code>m10</code> - the first matrix element in the second row.</dd>
<dd><code>m11</code> - the second matrix element in the second row.</dd>
<dd><code>m12</code> - the third matrix element in the second row.</dd>
<dd><code>m20</code> - the first matrix element in the third row.</dd>
<dd><code>m21</code> - the second matrix element in the third row.</dd>
<dd><code>m22</code> - the third matrix element in the third row.</dd>
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<pre>public&nbsp;Matrix3&#8203;(double[]&nbsp;elements)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink">IllegalArgumentException</a></pre>
<div class="block">Creates a new matrix initialized to the specified values.
The length of the given array must be 9 and the values in the same order than the above constructor.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>elements</code> - elements of the matrix. Column indices vary fastest.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink">Illegal­Argument­Exception</a></code> - if the given array does not have the expected length.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="#setElements(double%5B%5D)"><code>set­Elements(double[])</code></a>,
<a href="Matrices.html#create(int,int,double%5B%5D)"><code>Matrices​.create(int, int, double[])</code></a></dd>
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<pre class="methodSignature">public static&nbsp;<a href="Matrix3.html" title="class in org.apache.sis.referencing.operation.matrix">Matrix3</a>&nbsp;castOrCopy&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/Matrix.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">Matrix</a>&nbsp;matrix)
throws <a href="MismatchedMatrixSizeException.html" title="class in org.apache.sis.referencing.operation.matrix">MismatchedMatrixSizeException</a></pre>
<div class="block">Casts or copies the given matrix to a <code>Matrix3</code> implementation. If the given <code>matrix</code>
is already an instance of <code>Matrix3</code>, then it is returned unchanged. Otherwise this method
verifies the matrix size, then copies all elements in a new <code>Matrix3</code> object.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>matrix</code> - the matrix to cast or copy, or <code>null</code>.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the matrix argument if it can be safely casted (including <code>null</code> argument),
or a copy of the given matrix otherwise.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="MismatchedMatrixSizeException.html" title="class in org.apache.sis.referencing.operation.matrix">Mismatched­Matrix­Size­Exception</a></code> - if the size of the given matrix is not <a href="#SIZE">3</a>×<a href="#SIZE">3</a>.</dd>
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<pre class="methodSignature">public final&nbsp;int&nbsp;getNumRow()</pre>
<div class="block">Returns the number of rows in this matrix, which is always <a href="#SIZE">3</a> in this implementation.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>always <a href="#SIZE">3</a>.</dd>
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<pre class="methodSignature">public final&nbsp;int&nbsp;getNumCol()</pre>
<div class="block">Returns the number of columns in this matrix, which is always <a href="#SIZE">3</a> in this implementation.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>always <a href="#SIZE">3</a>.</dd>
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<pre class="methodSignature">public final&nbsp;double&nbsp;getElement&#8203;(int&nbsp;row,
int&nbsp;column)</pre>
<div class="block">Retrieves the value at the specified row and column of this matrix.
This method can be invoked when the matrix size or type is unknown.
If the matrix is known to be an instance of <code>Matrix3</code>,
then the <a href="#m00"><code>m00</code></a><a href="#m22"><code>m22</code></a> fields can be read directly for efficiency.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/Matrix.html?is-external=true#getElement(int,int)" title="class or interface in org.opengis.referencing.operation" class="externalLink">get­Element</a></code>&nbsp;in interface&nbsp;<code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/Matrix.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">Matrix</a></code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="MatrixSIS.html#getElement(int,int)">get­Element</a></code>&nbsp;in class&nbsp;<code><a href="MatrixSIS.html" title="class in org.apache.sis.referencing.operation.matrix">Matrix­SIS</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>row</code> - the row index, from 0 inclusive to <a href="#SIZE">3</a> exclusive.</dd>
<dd><code>column</code> - the column index, from 0 inclusive to <a href="#SIZE">3</a> exclusive.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the current value at the given row and column.</dd>
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<pre class="methodSignature">public final&nbsp;void&nbsp;setElement&#8203;(int&nbsp;row,
int&nbsp;column,
double&nbsp;value)</pre>
<div class="block">Modifies the value at the specified row and column of this matrix.
This method can be invoked when the matrix size or type is unknown.
If the matrix is known to be an instance of <code>Matrix3</code>,
then the <a href="#m00"><code>m00</code></a><a href="#m22"><code>m22</code></a> fields can be set directly for efficiency.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>row</code> - the row index, from 0 inclusive to <a href="#SIZE">3</a> exclusive.</dd>
<dd><code>column</code> - the column index, from 0 inclusive to <a href="#SIZE">3</a> exclusive.</dd>
<dd><code>value</code> - the new value to set at the given row and column.</dd>
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<pre class="methodSignature">public final&nbsp;double[]&nbsp;getElements()</pre>
<div class="block">Returns all matrix elements in a flat, row-major (column indices vary fastest) array.
The array length is 9.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="MatrixSIS.html#getElements()">get­Elements</a></code>&nbsp;in class&nbsp;<code><a href="MatrixSIS.html" title="class in org.apache.sis.referencing.operation.matrix">Matrix­SIS</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a copy of all current matrix elements in a row-major array.</dd>
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<h4>setElements</h4>
<pre class="methodSignature">public final&nbsp;void&nbsp;setElements&#8203;(double[]&nbsp;elements)</pre>
<div class="block">Sets all matrix elements from a flat, row-major (column indices vary fastest) array.
The array length shall be 9.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="MatrixSIS.html#setElements(double%5B%5D)">set­Elements</a></code>&nbsp;in class&nbsp;<code><a href="MatrixSIS.html" title="class in org.apache.sis.referencing.operation.matrix">Matrix­SIS</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>elements</code> - The new matrix elements in a row-major array.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="Matrices.html#create(int,int,double%5B%5D)"><code>Matrices​.create(int, int, double[])</code></a></dd>
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<pre class="methodSignature">public final&nbsp;boolean&nbsp;isAffine()</pre>
<div class="block">Returns <code>true</code> if this matrix represents an affine transform.
A transform is affine if the matrix is square and its last row contains
only zeros, except in the last column which contains 1.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="MatrixSIS.html#isAffine()">is­Affine</a></code>&nbsp;in class&nbsp;<code><a href="MatrixSIS.html" title="class in org.apache.sis.referencing.operation.matrix">Matrix­SIS</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>true</code> if this matrix represents an affine transform.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="Matrices.html#isAffine(org.opengis.referencing.operation.Matrix)"><code>Matrices​.is­Affine(Matrix)</code></a>,
<a href="../transform/LinearTransform.html#isAffine()"><code>Linear­Transform​.is­Affine()</code></a></dd>
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<pre class="methodSignature">public final&nbsp;boolean&nbsp;isIdentity()</pre>
<div class="block">Returns <code>true</code> if this matrix is an identity matrix.
This method is equivalent to the following code, except that it is potentially more efficient:
<blockquote><pre><font color="green">return</font> Matrices.<b>isIdentity</b>(<font color="green">this</font>, 0.0);</pre></blockquote></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/Matrix.html?is-external=true#isIdentity()" title="class or interface in org.opengis.referencing.operation" class="externalLink">is­Identity</a></code>&nbsp;in interface&nbsp;<code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/Matrix.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">Matrix</a></code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="MatrixSIS.html#isIdentity()">is­Identity</a></code>&nbsp;in class&nbsp;<code><a href="MatrixSIS.html" title="class in org.apache.sis.referencing.operation.matrix">Matrix­SIS</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>true</code> if this matrix is an identity matrix.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="Matrices.html#isIdentity(org.opengis.referencing.operation.Matrix,double)"><code>Matrices​.is­Identity(Matrix, double)</code></a>,
<a href="https://docs.oracle.com/javase/8/docs/api/java/awt/geom/AffineTransform.html?is-external=true#isIdentity()" title="class or interface in java.awt.geom" class="externalLink"><code>Affine­Transform​.is­Identity()</code></a></dd>
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<pre class="methodSignature">public&nbsp;void&nbsp;transpose()</pre>
<div class="block">Sets the value of this matrix to its transpose.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="MatrixSIS.html#transpose()">transpose</a></code>&nbsp;in class&nbsp;<code><a href="MatrixSIS.html" title="class in org.apache.sis.referencing.operation.matrix">Matrix­SIS</a></code></dd>
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