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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.sis.referencing.operation.transform</a></div> |
| <h2 title="Class EllipsoidToCentricTransform" class="title">Class EllipsoidToCentricTransform</h2> |
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| <li><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></li> |
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| <li>EllipsoidToCentricTransform</li> |
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| <pre>public class <span class="typeNameLabel">EllipsoidToCentricTransform</span> |
| extends <a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a> |
| implements <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></pre> |
| <div class="block">Transform from two- or three- dimensional ellipsoidal coordinates to (geo)centric coordinates. |
| This transform is usually (but not necessarily) part of a conversion from |
| <a href="../../crs/DefaultGeographicCRS.html" title="class in org.apache.sis.referencing.crs">geographic</a> to Cartesian |
| <a href="../../crs/DefaultGeocentricCRS.html" title="class in org.apache.sis.referencing.crs">geocentric</a> coordinates. |
| Each input coordinates is expected to contain: |
| <ol> |
| <li>longitude (λ) relative to the prime meridian (usually Greenwich),</li> |
| <li>latitude (φ),</li> |
| <li>optionally height above the ellipsoid (h).</li> |
| </ol> |
| |
| Output coordinates are as below: |
| <ul> |
| <li>In the Cartesian case: |
| <ol> |
| <li>distance from Earth center on the X axis (toward the intersection of prime meridian and equator),</li> |
| <li>distance from Earth center on the Y axis (toward the intersection of 90°E meridian and equator),</li> |
| <li>distance from Earth center on the Z axis (toward North pole).</li> |
| </ol> |
| </li> |
| </ul> |
| |
| The units of measurements depend on how the <code>MathTransform</code> has been created: |
| <ul> |
| <li><code>EllipsoidToCentricTransform</code> instances created directly by the constructor expect (λ,φ) values |
| in radians and compute (X,Y,Z) values in units of an ellipsoid having a semi-major axis length of 1. |
| That constructor is reserved for subclasses only.</li> |
| <li>Transforms created by the <a href="#createGeodeticConversion(org.opengis.referencing.operation.MathTransformFactory,double,double,javax.measure.Unit,boolean,org.apache.sis.referencing.operation.transform.EllipsoidToCentricTransform.TargetType)"><code>createGeodeticConversion(…)</code></a> static method expect |
| (λ,φ) values in degrees and compute (X,Y,Z) values in units of the ellipsoid axes (usually metres).</li> |
| </ul></div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>0.7</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../serialized-form.html#org.apache.sis.referencing.operation.transform.EllipsoidToCentricTransform">Serialized Form</a></dd> |
| |
| <p><font size="-1">Defined in the <code>sis-referencing</code> module</font></p> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Class</th> |
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| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="EllipsoidToCentricTransform.TargetType.html" title="enum in org.apache.sis.referencing.operation.transform">EllipsoidToCentricTransform.TargetType</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Whether the output coordinate system is Cartesian or Spherical.</div> |
| </td> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected double</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#eccentricitySquared">eccentricitySquared</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">The square of eccentricity: ℯ² = (a²-b²)/a² where |
| <var>a</var> is the <cite>semi-major</cite> axis length and |
| <var>b</var> is the <cite>semi-minor</cite> axis length.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
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| <h3>Constructor Summary</h3> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier</th> |
| <th class="colSecond" scope="col">Constructor</th> |
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| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(double,double,javax.measure.Unit,boolean,org.apache.sis.referencing.operation.transform.EllipsoidToCentricTransform.TargetType)">EllipsoidToCentricTransform</a></span>​(double semiMajor, |
| double semiMinor, |
| <a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/Unit.html?is-external=true" title="class or interface in javax.measure" class="externalLink">Unit</a><<a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/quantity/Length.html?is-external=true" title="class or interface in javax.measure.quantity" class="externalLink">Length</a>> unit, |
| boolean withHeight, |
| <a href="EllipsoidToCentricTransform.TargetType.html" title="enum in org.apache.sis.referencing.operation.transform">EllipsoidToCentricTransform.TargetType</a> target)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a transform from angles in radians on ellipsoid having a semi-major axis length of 1.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>protected int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#computeHashCode()">computeHashCode</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Computes a hash value for this transform.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createGeodeticConversion(org.opengis.referencing.operation.MathTransformFactory,double,double,javax.measure.Unit,boolean,org.apache.sis.referencing.operation.transform.EllipsoidToCentricTransform.TargetType)">createGeodeticConversion</a></span>​(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransformFactory.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransformFactory</a> factory, |
| double semiMajor, |
| double semiMinor, |
| <a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/Unit.html?is-external=true" title="class or interface in javax.measure" class="externalLink">Unit</a><<a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/quantity/Length.html?is-external=true" title="class or interface in javax.measure.quantity" class="externalLink">Length</a>> unit, |
| boolean withHeight, |
| <a href="EllipsoidToCentricTransform.TargetType.html" title="enum in org.apache.sis.referencing.operation.transform">EllipsoidToCentricTransform.TargetType</a> target)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a transform from geographic to geocentric coordinates.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createGeodeticConversion(org.opengis.referencing.operation.MathTransformFactory,org.opengis.referencing.datum.Ellipsoid,boolean)">createGeodeticConversion</a></span>​(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransformFactory.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransformFactory</a> factory, |
| <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/datum/Ellipsoid.html?is-external=true" title="class or interface in org.opengis.referencing.datum" class="externalLink">Ellipsoid</a> ellipsoid, |
| boolean withHeight)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a transform from geographic to Cartesian geocentric coordinates (convenience method).</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><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></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#derivative(org.opengis.geometry.DirectPosition)">derivative</a></span>​(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/geometry/DirectPosition.html?is-external=true" title="class or interface in org.opengis.geometry" class="externalLink">DirectPosition</a> point)</code></th> |
| <td class="colLast"> |
| <div class="block">Computes the derivative at the given location.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#equals(java.lang.Object,org.apache.sis.util.ComparisonMode)">equals</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> object, |
| <a href="../../../util/ComparisonMode.html" title="enum in org.apache.sis.util">ComparisonMode</a> mode)</code></th> |
| <td class="colLast"> |
| <div class="block">Compares the specified object with this math transform for equality.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>protected <a href="ContextualParameters.html" title="class in org.apache.sis.referencing.operation.transform">ContextualParameters</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getContextualParameters()">getContextualParameters</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the parameters used for creating the complete conversion.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/parameter/ParameterDescriptorGroup.html?is-external=true" title="class or interface in org.opengis.parameter" class="externalLink">ParameterDescriptorGroup</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getParameterDescriptors()">getParameterDescriptors</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a description of the internal parameters of this <code>EllipsoidToCentricTransform</code> transform.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/parameter/ParameterValueGroup.html?is-external=true" title="class or interface in org.opengis.parameter" class="externalLink">ParameterValueGroup</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getParameterValues()">getParameterValues</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a copy of internal parameter values of this <code>EllipsoidToCentricTransform</code> transform.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSourceDimensions()">getSourceDimensions</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Gets the dimension of input points, which is 2 or 3.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTargetDimensions()">getTargetDimensions</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Gets the dimension of output points, which is 3.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><a href="EllipsoidToCentricTransform.TargetType.html" title="enum in org.apache.sis.referencing.operation.transform">EllipsoidToCentricTransform.TargetType</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTargetType()">getTargetType</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether the target coordinate system is Cartesian or Spherical.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#inverse()">inverse</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the inverse of this transform.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#inverseTransform(double%5B%5D,int,double%5B%5D,int,int)">inverseTransform</a></span>​(double[] srcPts, |
| int srcOff, |
| double[] dstPts, |
| int dstOff, |
| int numPts)</code></th> |
| <td class="colLast"> |
| <div class="block">Converts Cartesian coordinates (<var>X</var>,<var>Y</var>,<var>Z</var>) to ellipsoidal coordinates |
| (λ,φ) or (λ,φ,<var>h</var>).</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><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></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#transform(double%5B%5D,int,double%5B%5D,int,boolean)">transform</a></span>​(double[] srcPts, |
| int srcOff, |
| double[] dstPts, |
| int dstOff, |
| boolean derivate)</code></th> |
| <td class="colLast"> |
| <div class="block">Converts the (λ,φ) or (λ,φ,<var>h</var>) geodetic coordinates to |
| to (<var>X</var>,<var>Y</var>,<var>Z</var>) geocentric coordinates, |
| and optionally returns the derivative at that location.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#transform(double%5B%5D,int,double%5B%5D,int,int)">transform</a></span>​(double[] srcPts, |
| int srcOff, |
| double[] dstPts, |
| int dstOff, |
| int numPts)</code></th> |
| <td class="colLast"> |
| <div class="block">Converts the (λ,φ) or (λ,φ,<var>h</var>) geodetic coordinates to |
| to (<var>X</var>,<var>Y</var>,<var>Z</var>) geocentric coordinates.</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>protected <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#tryConcatenate(boolean,org.opengis.referencing.operation.MathTransform,org.opengis.referencing.operation.MathTransformFactory)">tryConcatenate</a></span>​(boolean applyOtherFirst, |
| <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a> other, |
| <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransformFactory.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransformFactory</a> factory)</code></th> |
| <td class="colLast"> |
| <div class="block">If this transform expects three-dimensional inputs, and if the transform just before this one |
| unconditionally sets the height to zero, then replaces this transform by a two-dimensional one.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
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| </a> |
| <h3>Methods inherited from class <a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></h3> |
| <code><a href="AbstractMathTransform.html#equals(java.lang.Object)">equals</a>, <a href="AbstractMathTransform.html#formatTo(org.apache.sis.io.wkt.Formatter)">formatTo</a>, <a href="AbstractMathTransform.html#hashCode()">hashCode</a>, <a href="AbstractMathTransform.html#isIdentity()">isIdentity</a>, <a href="AbstractMathTransform.html#transform(double%5B%5D,int,float%5B%5D,int,int)">transform</a>, <a href="AbstractMathTransform.html#transform(float%5B%5D,int,double%5B%5D,int,int)">transform</a>, <a href="AbstractMathTransform.html#transform(float%5B%5D,int,float%5B%5D,int,int)">transform</a>, <a href="AbstractMathTransform.html#transform(org.opengis.geometry.DirectPosition,org.opengis.geometry.DirectPosition)">transform</a></code></li> |
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| <h3>Methods inherited from class <a href="../../../io/wkt/FormattableObject.html" title="class in org.apache.sis.io.wkt">FormattableObject</a></h3> |
| <code><a href="../../../io/wkt/FormattableObject.html#print()">print</a>, <a href="../../../io/wkt/FormattableObject.html#toString()">toString</a>, <a href="../../../io/wkt/FormattableObject.html#toString(org.apache.sis.io.wkt.Convention)">toString</a>, <a href="../../../io/wkt/FormattableObject.html#toWKT()">toWKT</a></code></li> |
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| <h3>Methods inherited from class <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <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>Methods inherited from interface <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a></h3> |
| <code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true#toWKT()" title="class or interface in org.opengis.referencing.operation" class="externalLink">toWKT</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
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| </a> |
| <h3>Field Detail</h3> |
| <a id="eccentricitySquared"> |
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| <h4>eccentricitySquared</h4> |
| <pre>protected final double eccentricitySquared</pre> |
| <div class="block">The square of eccentricity: ℯ² = (a²-b²)/a² where |
| <var>a</var> is the <cite>semi-major</cite> axis length and |
| <var>b</var> is the <cite>semi-minor</cite> axis length.</div> |
| </li> |
| </ul> |
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| <h3>Constructor Detail</h3> |
| <a id="<init>(double,double,javax.measure.Unit,boolean,org.apache.sis.referencing.operation.transform.EllipsoidToCentricTransform.TargetType)"> |
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| <h4>EllipsoidToCentricTransform</h4> |
| <pre>protected EllipsoidToCentricTransform​(double semiMajor, |
| double semiMinor, |
| <a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/Unit.html?is-external=true" title="class or interface in javax.measure" class="externalLink">Unit</a><<a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/quantity/Length.html?is-external=true" title="class or interface in javax.measure.quantity" class="externalLink">Length</a>> unit, |
| boolean withHeight, |
| <a href="EllipsoidToCentricTransform.TargetType.html" title="enum in org.apache.sis.referencing.operation.transform">EllipsoidToCentricTransform.TargetType</a> target)</pre> |
| <div class="block">Creates a transform from angles in radians on ellipsoid having a semi-major axis length of 1. |
| More specifically <code>EllipsoidToCentricTransform</code> instances expect input coordinates |
| as below: |
| |
| <ol> |
| <li>longitudes in <strong>radians</strong> relative to the prime meridian (usually Greenwich),</li> |
| <li>latitudes in <strong>radians</strong>,</li> |
| <li>optionally heights above the ellipsoid, in units of an ellipsoid having a semi-major axis length of 1.</li> |
| </ol> |
| |
| Output coordinates are as below, in units of an ellipsoid having a semi-major axis length of 1: |
| <ol> |
| <li>distance from Earth center on the X axis (toward the intersection of prime meridian and equator),</li> |
| <li>distance from Earth center on the Y axis (toward the intersection of 90°E meridian and equator),</li> |
| <li>distance from Earth center on the Z axis (toward North pole).</li> |
| </ol> |
| |
| <div class="section">Geographic to geocentric conversions</div> |
| For converting geographic coordinates to geocentric coordinates, <code>EllipsoidToCentricTransform</code> |
| instances need to be concatenated with the following affine transforms: |
| |
| <ul> |
| <li><cite>Normalization</cite> before <code>EllipsoidToCentricTransform</code>:<ul> |
| <li>Conversion of (λ,φ) from degrees to radians</li> |
| <li>Division of (h) by the semi-major axis length</li> |
| </ul></li> |
| <li><cite>Denormalization</cite> after <code>EllipsoidToCentricTransform</code>:<ul> |
| <li>Multiplication of (X,Y,Z) by the semi-major axis length</li> |
| </ul></li> |
| </ul> |
| |
| After <code>EllipsoidToCentricTransform</code> construction, |
| the full conversion chain including the above affine transforms can be created by |
| <code><a href="#getContextualParameters()">getContextualParameters()</a>.<a href="ContextualParameters.html#completeTransform(org.opengis.referencing.operation.MathTransformFactory,org.opengis.referencing.operation.MathTransform)">completeTransform</a>(factory, this)}</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>semiMajor</code> - the semi-major axis length.</dd> |
| <dd><code>semiMinor</code> - the semi-minor axis length.</dd> |
| <dd><code>unit</code> - the unit of measurement for the semi-axes and the ellipsoidal height.</dd> |
| <dd><code>withHeight</code> - <code>true</code> if source geographic coordinates include an ellipsoidal height |
| (i.e. are 3-D), or <code>false</code> if they are only 2-D.</dd> |
| <dd><code>target</code> - whether the target coordinate shall be Cartesian or Spherical.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="#createGeodeticConversion(org.opengis.referencing.operation.MathTransformFactory,double,double,javax.measure.Unit,boolean,org.apache.sis.referencing.operation.transform.EllipsoidToCentricTransform.TargetType)"><code>createGeodeticConversion(MathTransformFactory, double, double, Unit, boolean, TargetType)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
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| </a> |
| <h3>Method Detail</h3> |
| <a id="createGeodeticConversion(org.opengis.referencing.operation.MathTransformFactory,double,double,javax.measure.Unit,boolean,org.apache.sis.referencing.operation.transform.EllipsoidToCentricTransform.TargetType)"> |
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| <h4>createGeodeticConversion</h4> |
| <pre class="methodSignature">public static <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a> createGeodeticConversion​(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransformFactory.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransformFactory</a> factory, |
| double semiMajor, |
| double semiMinor, |
| <a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/Unit.html?is-external=true" title="class or interface in javax.measure" class="externalLink">Unit</a><<a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/quantity/Length.html?is-external=true" title="class or interface in javax.measure.quantity" class="externalLink">Length</a>> unit, |
| boolean withHeight, |
| <a href="EllipsoidToCentricTransform.TargetType.html" title="enum in org.apache.sis.referencing.operation.transform">EllipsoidToCentricTransform.TargetType</a> target) |
| throws <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/util/FactoryException.html?is-external=true" title="class or interface in org.opengis.util" class="externalLink">FactoryException</a></pre> |
| <div class="block">Creates a transform from geographic to geocentric coordinates. This factory method combines the |
| <code>EllipsoidToCentricTransform</code> instance with the steps needed for converting degrees to |
| radians and expressing the results in units of the given ellipsoid. |
| |
| <p>Input coordinates are expected to contain:</p> |
| <ol> |
| <li>longitudes in <strong>degrees</strong> relative to the prime meridian (usually Greenwich),</li> |
| <li>latitudes in <strong>degrees</strong>,</li> |
| <li>optionally heights above the ellipsoid, in units of the ellipsoid axis (usually metres).</li> |
| </ol> |
| |
| Output coordinates are as below, in units of the ellipsoid axis (usually metres): |
| <ol> |
| <li>distance from Earth center on the X axis (toward the intersection of prime meridian and equator),</li> |
| <li>distance from Earth center on the Y axis (toward the intersection of 90°E meridian and equator),</li> |
| <li>distance from Earth center on the Z axis (toward North pole).</li> |
| </ol></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>factory</code> - the factory to use for creating and concatenating the affine transforms.</dd> |
| <dd><code>semiMajor</code> - the semi-major axis length.</dd> |
| <dd><code>semiMinor</code> - the semi-minor axis length.</dd> |
| <dd><code>unit</code> - the unit of measurement for the semi-axes and the ellipsoidal height.</dd> |
| <dd><code>withHeight</code> - <code>true</code> if source geographic coordinates include an ellipsoidal height |
| (i.e. are 3-D), or <code>false</code> if they are only 2-D.</dd> |
| <dd><code>target</code> - whether the target coordinate shall be Cartesian or Spherical.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the conversion from geographic to geocentric coordinates.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/util/FactoryException.html?is-external=true" title="class or interface in org.opengis.util" class="externalLink">FactoryException</a></code> - if an error occurred while creating a transform.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="createGeodeticConversion(org.opengis.referencing.operation.MathTransformFactory,org.opengis.referencing.datum.Ellipsoid,boolean)"> |
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| </a> |
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| <h4>createGeodeticConversion</h4> |
| <pre class="methodSignature">public static <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a> createGeodeticConversion​(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransformFactory.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransformFactory</a> factory, |
| <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/datum/Ellipsoid.html?is-external=true" title="class or interface in org.opengis.referencing.datum" class="externalLink">Ellipsoid</a> ellipsoid, |
| boolean withHeight) |
| throws <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/util/FactoryException.html?is-external=true" title="class or interface in org.opengis.util" class="externalLink">FactoryException</a></pre> |
| <div class="block">Creates a transform from geographic to Cartesian geocentric coordinates (convenience method). |
| Invoking this method is equivalent to the following: |
| |
| <blockquote><pre><b>createGeodeticConversion</b>(factory, |
| ellipsoid.<b>getSemiMajorAxis</b>(), |
| ellipsoid.<b>getSemiMinorAxis</b>(), |
| ellipsoid.<b>getAxisUnit</b>(), |
| withHeight, TargetType.CARTESIAN);</pre></blockquote> |
| |
| The target type is assumed Cartesian because this is the most frequently used target.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>factory</code> - the factory to use for creating and concatenating the affine transforms.</dd> |
| <dd><code>ellipsoid</code> - the semi-major and semi-minor axis lengths with their unit of measurement.</dd> |
| <dd><code>withHeight</code> - <code>true</code> if source geographic coordinates include an ellipsoidal height |
| (i.e. are 3-D), or <code>false</code> if they are only 2-D.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the conversion from geographic to Cartesian geocentric coordinates.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/util/FactoryException.html?is-external=true" title="class or interface in org.opengis.util" class="externalLink">FactoryException</a></code> - if an error occurred while creating a transform.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getContextualParameters()"> |
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| </a> |
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| <h4>getContextualParameters</h4> |
| <pre class="methodSignature">protected <a href="ContextualParameters.html" title="class in org.apache.sis.referencing.operation.transform">ContextualParameters</a> getContextualParameters()</pre> |
| <div class="block">Returns the parameters used for creating the complete conversion. Those parameters describe a sequence |
| of <cite>normalize</cite> → <code>this</code> → <cite>denormalize</cite> transforms, <strong>not</strong> |
| including <a href="../../cs/CoordinateSystems.html#swapAndScaleAxes(org.opengis.referencing.cs.CoordinateSystem,org.opengis.referencing.cs.CoordinateSystem)">axis swapping</a>. |
| Those parameters are used for formatting <cite>Well Known Text</cite> (WKT) and error messages.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="AbstractMathTransform.html#getContextualParameters()">getContextualParameters</a></code> in class <code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the parameters values for the sequence of |
| <cite>normalize</cite> → <code>this</code> → <cite>denormalize</cite> transforms.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getParameterValues()"> |
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| <h4>getParameterValues</h4> |
| <pre class="methodSignature"><a href="../../../util/Debug.html" title="annotation in org.apache.sis.util">@Debug</a> |
| public <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/parameter/ParameterValueGroup.html?is-external=true" title="class or interface in org.opengis.parameter" class="externalLink">ParameterValueGroup</a> getParameterValues()</pre> |
| <div class="block">Returns a copy of internal parameter values of this <code>EllipsoidToCentricTransform</code> transform. |
| The returned group contains parameter values for the number of dimensions and the eccentricity. |
| |
| <div class="note"><b>Note:</b> |
| this method is mostly for <a href="../../../io/wkt/Convention.html#INTERNAL">debugging purposes</a> |
| since the isolation of non-linear parameters in this class is highly implementation dependent. |
| Most GIS applications will instead be interested in the <a href="#getContextualParameters()">contextual parameters</a>.</div></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../parameter/Parameterized.html#getParameterValues()">getParameterValues</a></code> in interface <code><a href="../../../parameter/Parameterized.html" title="interface in org.apache.sis.parameter">Parameterized</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="AbstractMathTransform.html#getParameterValues()">getParameterValues</a></code> in class <code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a copy of the internal parameter values for this transform.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="AbstractMathTransform.html#getContextualParameters()"><code>AbstractMathTransform.getContextualParameters()</code></a>, |
| <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/SingleOperation.html?is-external=true#getParameterValues()" title="class or interface in org.opengis.referencing.operation" class="externalLink"><code>SingleOperation.getParameterValues()</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getParameterDescriptors()"> |
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| <h4>getParameterDescriptors</h4> |
| <pre class="methodSignature"><a href="../../../util/Debug.html" title="annotation in org.apache.sis.util">@Debug</a> |
| public <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/parameter/ParameterDescriptorGroup.html?is-external=true" title="class or interface in org.opengis.parameter" class="externalLink">ParameterDescriptorGroup</a> getParameterDescriptors()</pre> |
| <div class="block">Returns a description of the internal parameters of this <code>EllipsoidToCentricTransform</code> transform. |
| The returned group contains parameter descriptors for the number of dimensions and the eccentricity.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../parameter/Parameterized.html#getParameterDescriptors()">getParameterDescriptors</a></code> in interface <code><a href="../../../parameter/Parameterized.html" title="interface in org.apache.sis.parameter">Parameterized</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="AbstractMathTransform.html#getParameterDescriptors()">getParameterDescriptors</a></code> in class <code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a description of the internal parameters.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../DefaultOperationMethod.html#getParameters()"><code>DefaultOperationMethod.getParameters()</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getSourceDimensions()"> |
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| <h4>getSourceDimensions</h4> |
| <pre class="methodSignature">public final int getSourceDimensions()</pre> |
| <div class="block">Gets the dimension of input points, which is 2 or 3.</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/MathTransform.html?is-external=true#getSourceDimensions()" title="class or interface in org.opengis.referencing.operation" class="externalLink">getSourceDimensions</a></code> in interface <code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="AbstractMathTransform.html#getSourceDimensions()">getSourceDimensions</a></code> in class <code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>2 or 3.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../DefaultOperationMethod.html#getSourceDimensions()"><code>DefaultOperationMethod.getSourceDimensions()</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getTargetDimensions()"> |
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| <h4>getTargetDimensions</h4> |
| <pre class="methodSignature">public final int getTargetDimensions()</pre> |
| <div class="block">Gets the dimension of output points, which is 3.</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/MathTransform.html?is-external=true#getTargetDimensions()" title="class or interface in org.opengis.referencing.operation" class="externalLink">getTargetDimensions</a></code> in interface <code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="AbstractMathTransform.html#getTargetDimensions()">getTargetDimensions</a></code> in class <code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>always 3.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../DefaultOperationMethod.html#getTargetDimensions()"><code>DefaultOperationMethod.getTargetDimensions()</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getTargetType()"> |
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| <h4>getTargetType</h4> |
| <pre class="methodSignature">public final <a href="EllipsoidToCentricTransform.TargetType.html" title="enum in org.apache.sis.referencing.operation.transform">EllipsoidToCentricTransform.TargetType</a> getTargetType()</pre> |
| <div class="block">Returns whether the target coordinate system is Cartesian or Spherical.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>whether the target coordinate system is Cartesian or Spherical.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="derivative(org.opengis.geometry.DirectPosition)"> |
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| <h4>derivative</h4> |
| <pre class="methodSignature">public <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> derivative​(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/geometry/DirectPosition.html?is-external=true" title="class or interface in org.opengis.geometry" class="externalLink">DirectPosition</a> point) |
| throws <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/TransformException.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">TransformException</a></pre> |
| <div class="block">Computes the derivative at the given location. |
| This method relaxes a little bit the <code>MathTransform</code> contract by accepting two- or three-dimensional |
| points even if the number of dimensions does not match the <a href="#getSourceDimensions()"><code>getSourceDimensions()</code></a> value. |
| |
| <div class="note"><b>Rational:</b> |
| that flexibility on the number of dimensions is required for calculation of <a href="#inverse()">inverse</a> |
| transform derivative, because that calculation needs to inverse a square matrix with all terms in it before |
| to drop the last row in the two-dimensional case.</div></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/MathTransform.html?is-external=true#derivative(org.opengis.geometry.DirectPosition)" title="class or interface in org.opengis.referencing.operation" class="externalLink">derivative</a></code> in interface <code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="AbstractMathTransform.html#derivative(org.opengis.geometry.DirectPosition)">derivative</a></code> in class <code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>point</code> - the coordinate point where to evaluate the derivative.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the derivative at the specified point (never <code>null</code>).</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/TransformException.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">TransformException</a></code> - if the derivative can not be evaluated at the specified point.</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>transform</h4> |
| <pre class="methodSignature">public <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> transform​(double[] srcPts, |
| int srcOff, |
| double[] dstPts, |
| int dstOff, |
| boolean derivate) |
| throws <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/TransformException.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">TransformException</a></pre> |
| <div class="block">Converts the (λ,φ) or (λ,φ,<var>h</var>) geodetic coordinates to |
| to (<var>X</var>,<var>Y</var>,<var>Z</var>) geocentric coordinates, |
| and optionally returns the derivative at that location.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="AbstractMathTransform.html#transform(double%5B%5D,int,double%5B%5D,int,boolean)">transform</a></code> in class <code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>srcPts</code> - the array containing the source coordinate (can not be <code>null</code>).</dd> |
| <dd><code>srcOff</code> - the offset to the point to be transformed in the source array.</dd> |
| <dd><code>dstPts</code> - the array into which the transformed coordinate is returned. May be the same than <code>srcPts</code>. |
| May be <code>null</code> if only the derivative matrix is desired.</dd> |
| <dd><code>dstOff</code> - the offset to the location of the transformed point that is stored in the destination array.</dd> |
| <dd><code>derivate</code> - <code>true</code> for computing the derivative, or <code>false</code> if not needed.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the matrix of the transform derivative at the given source position, |
| or <code>null</code> if the <code>derivate</code> argument is <code>false</code>.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/TransformException.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">TransformException</a></code> - if the point can not be transformed or |
| if a problem occurred while calculating the derivative.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="AbstractMathTransform.html#derivative(org.opengis.geometry.DirectPosition)"><code>AbstractMathTransform.derivative(DirectPosition)</code></a>, |
| <a href="AbstractMathTransform.html#transform(org.opengis.geometry.DirectPosition,org.opengis.geometry.DirectPosition)"><code>AbstractMathTransform.transform(DirectPosition, DirectPosition)</code></a>, |
| <a href="MathTransforms.html#derivativeAndTransform(org.opengis.referencing.operation.MathTransform,double%5B%5D,int,double%5B%5D,int)"><code>MathTransforms.derivativeAndTransform(MathTransform, double[], int, double[], int)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="transform(double[],int,double[],int,int)"> |
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| <h4>transform</h4> |
| <pre class="methodSignature">public void transform​(double[] srcPts, |
| int srcOff, |
| double[] dstPts, |
| int dstOff, |
| int numPts) |
| throws <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/TransformException.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">TransformException</a></pre> |
| <div class="block">Converts the (λ,φ) or (λ,φ,<var>h</var>) geodetic coordinates to |
| to (<var>X</var>,<var>Y</var>,<var>Z</var>) geocentric coordinates. |
| This method performs the same conversion than <a href="#transform(double%5B%5D,int,double%5B%5D,int,boolean)"><code>transform(double[], int, double[], int, boolean)</code></a>, |
| but the formulas are repeated here for performance reasons.</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/MathTransform.html?is-external=true#transform(double%5B%5D,int,double%5B%5D,int,int)" title="class or interface in org.opengis.referencing.operation" class="externalLink">transform</a></code> in interface <code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="AbstractMathTransform.html#transform(double%5B%5D,int,double%5B%5D,int,int)">transform</a></code> in class <code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>srcPts</code> - the array containing the source point coordinates.</dd> |
| <dd><code>srcOff</code> - the offset to the first point to be transformed in the source array.</dd> |
| <dd><code>dstPts</code> - the array into which the transformed point coordinates are returned. |
| May be the same than <code>srcPts</code>.</dd> |
| <dd><code>dstOff</code> - the offset to the location of the first transformed point that is stored in the destination array.</dd> |
| <dd><code>numPts</code> - the number of point objects to be transformed.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/TransformException.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">TransformException</a></code> - if a point can not be transformed.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="inverseTransform(double[],int,double[],int,int)"> |
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| <h4>inverseTransform</h4> |
| <pre class="methodSignature">protected void inverseTransform​(double[] srcPts, |
| int srcOff, |
| double[] dstPts, |
| int dstOff, |
| int numPts) |
| throws <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/TransformException.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">TransformException</a></pre> |
| <div class="block">Converts Cartesian coordinates (<var>X</var>,<var>Y</var>,<var>Z</var>) to ellipsoidal coordinates |
| (λ,φ) or (λ,φ,<var>h</var>). This method is invoked by the transform returned by <a href="#inverse()"><code>inverse()</code></a>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>srcPts</code> - the array containing the source point coordinates.</dd> |
| <dd><code>srcOff</code> - the offset to the first point to be transformed in the source array.</dd> |
| <dd><code>dstPts</code> - the array into which the transformed point coordinates are returned. |
| May be the same than <code>srcPts</code>.</dd> |
| <dd><code>dstOff</code> - the offset to the location of the first transformed point that is stored in the destination array.</dd> |
| <dd><code>numPts</code> - the number of point objects to be transformed.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/TransformException.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">TransformException</a></code> - if the calculation does not converge.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="inverse()"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>inverse</h4> |
| <pre class="methodSignature">public <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a> inverse()</pre> |
| <div class="block">Returns the inverse of this transform. The default implementation returns a transform |
| that will delegate its work to <a href="#inverseTransform(double%5B%5D,int,double%5B%5D,int,int)"><code>inverseTransform(double[], int, double[], int, int)</code></a>.</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/MathTransform.html?is-external=true#inverse()" title="class or interface in org.opengis.referencing.operation" class="externalLink">inverse</a></code> in interface <code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="AbstractMathTransform.html#inverse()">inverse</a></code> in class <code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the conversion from (geo)centric to ellipsoidal coordinates.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="computeHashCode()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>computeHashCode</h4> |
| <pre class="methodSignature">protected int computeHashCode()</pre> |
| <div class="block">Computes a hash value for this transform. This method is invoked by <a href="AbstractMathTransform.html#hashCode()"><code>AbstractMathTransform.hashCode()</code></a> when first needed.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="AbstractMathTransform.html#computeHashCode()">computeHashCode</a></code> in class <code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the hash code value. This value may change between different execution of the Apache SIS library.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="equals(java.lang.Object,org.apache.sis.util.ComparisonMode)"> |
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| </a> |
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| <h4>equals</h4> |
| <pre class="methodSignature">public boolean equals​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> object, |
| <a href="../../../util/ComparisonMode.html" title="enum in org.apache.sis.util">ComparisonMode</a> mode)</pre> |
| <div class="block">Compares the specified object with this math transform for equality.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../util/LenientComparable.html#equals(java.lang.Object,org.apache.sis.util.ComparisonMode)">equals</a></code> in interface <code><a href="../../../util/LenientComparable.html" title="interface in org.apache.sis.util">LenientComparable</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="AbstractMathTransform.html#equals(java.lang.Object,org.apache.sis.util.ComparisonMode)">equals</a></code> in class <code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>object</code> - the object to compare with this transform.</dd> |
| <dd><code>mode</code> - the strictness level of the comparison. Default to <a href="../../../util/ComparisonMode.html#STRICT"><code>STRICT</code></a>.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><code>true</code> if the given object is considered equals to this math transform.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../util/Utilities.html#deepEquals(java.lang.Object,java.lang.Object,org.apache.sis.util.ComparisonMode)"><code>Utilities.deepEquals(Object, Object, ComparisonMode)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="tryConcatenate(boolean,org.opengis.referencing.operation.MathTransform,org.opengis.referencing.operation.MathTransformFactory)"> |
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| <h4>tryConcatenate</h4> |
| <pre class="methodSignature">protected <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a> tryConcatenate​(boolean applyOtherFirst, |
| <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransform.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransform</a> other, |
| <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/operation/MathTransformFactory.html?is-external=true" title="class or interface in org.opengis.referencing.operation" class="externalLink">MathTransformFactory</a> factory) |
| throws <a href="http://www.geoapi.org/3.0/javadoc/org/opengis/util/FactoryException.html?is-external=true" title="class or interface in org.opengis.util" class="externalLink">FactoryException</a></pre> |
| <div class="block">If this transform expects three-dimensional inputs, and if the transform just before this one |
| unconditionally sets the height to zero, then replaces this transform by a two-dimensional one. |
| The intent is to handle the following sequence of operations defined in the EPSG database: |
| |
| <ol> |
| <li>Inverse of <cite>Geographic 3D to 2D conversion</cite> (EPSG:9659)</li> |
| <li><cite>Geographic/geocentric conversions</cite> (EPSG:9602)</li> |
| </ol> |
| |
| Replacing the above sequence by a two-dimensional <code>EllipsoidToCentricTransform</code> instance |
| allow the following optimizations: |
| |
| <ul> |
| <li>Avoid computation of <var>h</var> value.</li> |
| <li>Allow use of the more efficient <a href="https://docs.oracle.com/javase/8/docs/api/java/awt/geom/AffineTransform.html?is-external=true" title="class or interface in java.awt.geom" class="externalLink"><code>AffineTransform</code></a> before this transform |
| instead than a transform based on a matrix of size 4×3.</li> |
| </ul></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="AbstractMathTransform.html#tryConcatenate(boolean,org.opengis.referencing.operation.MathTransform,org.opengis.referencing.operation.MathTransformFactory)">tryConcatenate</a></code> in class <code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>applyOtherFirst</code> - <code>true</code> if the transformation order is <code>other</code> followed by <code>this</code>, or |
| <code>false</code> if the transformation order is <code>this</code> followed by <code>other</code>.</dd> |
| <dd><code>other</code> - the other math transform to (pre-)concatenate with this transform.</dd> |
| <dd><code>factory</code> - the factory which is (indirectly) invoking this method, or <code>null</code> if none.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the combined math transform, or <code>null</code> if no optimized combined transform is available.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org/opengis/util/FactoryException.html?is-external=true" title="class or interface in org.opengis.util" class="externalLink">FactoryException</a></code> - if an error occurred while combining the transforms.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="DefaultMathTransformFactory.html#createConcatenatedTransform(org.opengis.referencing.operation.MathTransform,org.opengis.referencing.operation.MathTransform)"><code>DefaultMathTransformFactory.createConcatenatedTransform(MathTransform, MathTransform)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
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