org.apache.sis.referencing/org/apache/sis/referencing/operation/transform/InterpolatedGeocentricTransform.html - sis-site - Git at Google

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 <div class="sub-title"><span class="module-label-in-type">Module</span>&nbsp;<a href="../../../../../../module-summary.html">org.apache.sis.referencing</a></div>
 <div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.sis.referencing.operation.transform</a></div>
 <h1 title="Class InterpolatedGeocentricTransform" class="title">Class InterpolatedGeocentricTransform</h1>
 </div>
 <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>
 <div class="inheritance"><a href="../../../io/wkt/FormattableObject.html" title="class in org.apache.sis.io.wkt">FormattableObject</a>
 <div class="inheritance"><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a>
 <div class="inheritance"><a href="DatumShiftTransform.html" title="class in org.apache.sis.referencing.operation.transform">DatumShiftTransform</a>
 <div class="inheritance">InterpolatedGeocentricTransform</div>
 </div>
 </div>
 </div>
 </div>
 <section class="class-description" id="class-description">
 <dl class="notes">
 <dt>All Implemented Interfaces:</dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/Serializable.html" title="class or interface in java.io" class="external-link">Serializable</a></code>, <code><a href="../../../parameter/Parameterized.html" title="interface in org.apache.sis.parameter">Parameterized</a></code>, <code><a href="../../../../../../../org.apache.sis.util/org/apache/sis/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.geoapi/org/opengis/referencing/operation/MathTransform.html" title="class or interface in org.opengis.referencing.operation" class="external-link">MathTransform</a></code></dd>
 </dl>
 <hr>
 <div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">InterpolatedGeocentricTransform</span>
 <span class="extends-implements">extends <a href="DatumShiftTransform.html" title="class in org.apache.sis.referencing.operation.transform">DatumShiftTransform</a></span></div>
 <div class="block">Transforms between two geographic CRS by performing geocentric translations interpolated from a grid file.
  This transform is used mainly for <cite>"France geocentric interpolation"</cite> (ESPG:9655) datum shifts,
  but Apache SIS implementation allows the use for other regions.

  <h2 id="algorithm-heading">Algorithm</h2>
  This class transforms two- or three- dimensional coordinates from a geographic CRS to another geographic CRS.
  The changes between source and target coordinates are small (usually less than 400 metres), but vary for every
  position. Those changes are provided in a <a href="../../datum/DatumShiftGrid.html" title="class in org.apache.sis.referencing.datum">datum shift grid</a>, usually loaded from one
  or two files.

  <p>Many datum shift grids like NADCON and NTv2 apply the changes directly on geographic coordinates.
  This relatively simple case is handled by <a href="InterpolatedTransform.html" title="class in org.apache.sis.referencing.operation.transform"><code>InterpolatedTransform</code></a>.
  But the <code>InterpolatedGeocentricTransform</code> algorithm uses the grid in a more complex way:</p>

  <ol>
    <li>Convert input geographic coordinate (λ,φ) to geocentric coordinate (X,Y,Z).</li>
    <li>Ask <a href="../../datum/DatumShiftGrid.html" title="class in org.apache.sis.referencing.datum"><code>DatumShiftGrid</code></a> for the offset to apply for coordinate (λ,φ).
        But instead of returning a (Δλ, Δφ) offset, the grid shall return a (ΔX, ΔY, ΔZ) offset.</li>
    <li>Convert the shifted geocentric coordinate (X+ΔX, Y+ΔY, Z+ΔZ) back to a geographic coordinate.</li>
  </ol>

  <h3 id="reference-heading">Reference</h3>
  IGN document <code>NTG_88.pdf</code>,
  <cite>"Grille de paramètres de transformation de coordonnées"</cite>
  at <a href="http://www.ign.fr">http://www.ign.fr</a>.
  Note however that the signs of (ΔX, ΔY, ΔZ) values expected by this class are the opposite of the
  signs used in NTG_88 document. This is because NTG_88 grid defines shifts from target to source,
  while this class expects shifts from source to target.

  <p><b>Note:</b> this algorithm is not the same as a (theoretical) <a href="EllipsoidToCentricTransform.html" title="class in org.apache.sis.referencing.operation.transform"><code>EllipsoidToCentricTransform</code></a> →
  <a href="InterpolatedTransform.html" title="class in org.apache.sis.referencing.operation.transform"><code>InterpolatedTransform</code></a> → (inverse of <code>EllipsoidToCentricTransform</code>) concatenation
  because the <code>DatumShiftGrid</code> inputs are geographic coordinates even if the interpolated
  grid values are in geocentric space.</p>

  <h2 id="performance-consideration-heading">Performance consideration</h2>
  <a href="InterpolatedMolodenskyTransform.html" title="class in org.apache.sis.referencing.operation.transform"><code>InterpolatedMolodenskyTransform</code></a> performs the same calculation more efficiently at the cost of
  a few centimetres error. Both classes are instantiated in the same way and expect the same inputs.</div>
 <dl class="notes">
 <dt>Since:</dt>
 <dd>0.7</dd>
 <dt>See Also:</dt>
 <dd>
 <ul class="tag-list-long">
 <li><a href="InterpolatedMolodenskyTransform.html" title="class in org.apache.sis.referencing.operation.transform"><code>InterpolatedMolodenskyTransform</code></a></li>
 <li><a href="../../../../../../../serialized-form.html#org.apache.sis.referencing.operation.transform.InterpolatedGeocentricTransform">Serialized Form</a></li>
 </ul>
 </dd>
 </dl>
 </section>
 <section class="summary">
 <ul class="summary-list">
 <!-- ======== CONSTRUCTOR SUMMARY ======== -->
 <li>
 <section class="constructor-summary" id="constructor-summary">
 <h2>Constructor Summary</h2>
 <div class="caption"><span>Constructors</span></div>
 <div class="summary-table three-column-summary">
 <div class="table-header col-first">Modifier</div>
 <div class="table-header col-second">Constructor</div>
 <div class="table-header col-last">Description</div>
 <div class="col-first even-row-color"><code>protected </code></div>
 <div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E(org.opengis.referencing.datum.Ellipsoid,boolean,org.opengis.referencing.datum.Ellipsoid,boolean,org.apache.sis.referencing.datum.DatumShiftGrid)" class="member-name-link">InterpolatedGeocentricTransform</a><wbr>(<a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/datum/Ellipsoid.html" title="class or interface in org.opengis.referencing.datum" class="external-link">Ellipsoid</a>&nbsp;source,
  boolean&nbsp;isSource3D,
  <a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/datum/Ellipsoid.html" title="class or interface in org.opengis.referencing.datum" class="external-link">Ellipsoid</a>&nbsp;target,
  boolean&nbsp;isTarget3D,
  <a href="../../datum/DatumShiftGrid.html" title="class in org.apache.sis.referencing.datum">DatumShiftGrid</a>&lt;<a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/quantity/Angle.html" title="class or interface in javax.measure.quantity" class="external-link">Angle</a>,<wbr><a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/quantity/Length.html" title="class or interface in javax.measure.quantity" class="external-link">Length</a>&gt;&nbsp;grid)</code></div>
 <div class="col-last even-row-color">
 <div class="block">Creates a transform from the specified parameters.</div>
 </div>
 </div>
 </section>
 </li>
 <!-- ========== METHOD SUMMARY =========== -->
 <li>
 <section class="method-summary" id="method-summary">
 <h2>Method Summary</h2>
 <div id="method-summary-table">
 <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab1" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab1', 3)" class="table-tab">Static Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div>
 <div id="method-summary-table.tabpanel" role="tabpanel">
 <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0">
 <div class="table-header col-first">Modifier and Type</div>
 <div class="table-header col-second">Method</div>
 <div class="table-header col-last">Description</div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransform.html" title="class or interface in org.opengis.referencing.operation" class="external-link">MathTransform</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#createGeodeticTransformation(org.opengis.referencing.operation.MathTransformFactory,org.opengis.referencing.datum.Ellipsoid,boolean,org.opengis.referencing.datum.Ellipsoid,boolean,org.apache.sis.referencing.datum.DatumShiftGrid)" class="member-name-link">createGeodeticTransformation</a><wbr>(<a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransformFactory.html" title="class or interface in org.opengis.referencing.operation" class="external-link">MathTransformFactory</a>&nbsp;factory,
  <a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/datum/Ellipsoid.html" title="class or interface in org.opengis.referencing.datum" class="external-link">Ellipsoid</a>&nbsp;source,
  boolean&nbsp;isSource3D,
  <a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/datum/Ellipsoid.html" title="class or interface in org.opengis.referencing.datum" class="external-link">Ellipsoid</a>&nbsp;target,
  boolean&nbsp;isTarget3D,
  <a href="../../datum/DatumShiftGrid.html" title="class in org.apache.sis.referencing.datum">DatumShiftGrid</a>&lt;<a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/quantity/Angle.html" title="class or interface in javax.measure.quantity" class="external-link">Angle</a>,<wbr><a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/quantity/Length.html" title="class or interface in javax.measure.quantity" class="external-link">Length</a>&gt;&nbsp;grid)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Creates a transformation between two geographic CRS.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getSourceDimensions()" class="member-name-link">getSourceDimensions</a>()</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Gets the dimension of input points.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getTargetDimensions()" class="member-name-link">getTargetDimensions</a>()</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Gets the dimension of output points.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransform.html" title="class or interface in org.opengis.referencing.operation" class="external-link">MathTransform</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#inverse()" class="member-name-link">inverse</a>()</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Returns the inverse of this interpolated geocentric transform.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/Matrix.html" title="class or interface in org.opengis.referencing.operation" class="external-link">Matrix</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#transform(double%5B%5D,int,double%5B%5D,int,boolean)" class="member-name-link">transform</a><wbr>(double[]&nbsp;srcPts,
  int&nbsp;srcOff,
  double[]&nbsp;dstPts,
  int&nbsp;dstOff,
  boolean&nbsp;derivate)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Transforms the (λ,φ) or (λ,φ,<var>h</var>) coordinates between two geographic CRS,
  and optionally returns the derivative at that location.</div>
 </div>
 </div>
 </div>
 </div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-DatumShiftTransform">Methods inherited from class&nbsp;<a href="DatumShiftTransform.html" title="class in org.apache.sis.referencing.operation.transform">DatumShiftTransform</a></h3>
 <code><a href="DatumShiftTransform.html#computeHashCode()">computeHashCode</a>, <a href="DatumShiftTransform.html#equals(java.lang.Object,org.apache.sis.util.ComparisonMode)">equals</a>, <a href="DatumShiftTransform.html#getContextualParameters()">getContextualParameters</a>, <a href="DatumShiftTransform.html#getParameterValues()">getParameterValues</a></code></div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-AbstractMathTransform">Methods inherited from class&nbsp;<a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></h3>
 <code><a href="AbstractMathTransform.html#derivative(org.opengis.geometry.DirectPosition)">derivative</a>, <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#getDomain(org.apache.sis.referencing.operation.transform.DomainDefinition)">getDomain</a>, <a href="AbstractMathTransform.html#getParameterDescriptors()">getParameterDescriptors</a>, <a href="AbstractMathTransform.html#hashCode()">hashCode</a>, <a href="AbstractMathTransform.html#isIdentity()">isIdentity</a>, <a href="AbstractMathTransform.html#transform(double%5B%5D,int,double%5B%5D,int,int)">transform</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>, <a href="AbstractMathTransform.html#tryConcatenate(boolean,org.opengis.referencing.operation.MathTransform,org.opengis.referencing.operation.MathTransformFactory)">tryConcatenate</a></code></div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-FormattableObject">Methods inherited from class&nbsp;<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></div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-Object">Methods inherited from class&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
 <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-MathTransform">Methods inherited from interface&nbsp;<a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransform.html" title="class or interface in org.opengis.referencing.operation" class="external-link">MathTransform</a></h3>
 <code><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransform.html#toWKT()" title="class or interface in org.opengis.referencing.operation" class="external-link">toWKT</a></code></div>
 </section>
 </li>
 </ul>
 </section>
 <section class="details">
 <ul class="details-list">
 <!-- ========= CONSTRUCTOR DETAIL ======== -->
 <li>
 <section class="constructor-details" id="constructor-detail">
 <h2>Constructor Details</h2>
 <ul class="member-list">
 <li>
 <section class="detail" id="&lt;init&gt;(org.opengis.referencing.datum.Ellipsoid,boolean,org.opengis.referencing.datum.Ellipsoid,boolean,org.apache.sis.referencing.datum.DatumShiftGrid)">
 <h3>InterpolatedGeocentricTransform</h3>
 <div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="element-name">InterpolatedGeocentricTransform</span><wbr><span class="parameters">(<a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/datum/Ellipsoid.html" title="class or interface in org.opengis.referencing.datum" class="external-link">Ellipsoid</a>&nbsp;source,
  boolean&nbsp;isSource3D,
  <a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/datum/Ellipsoid.html" title="class or interface in org.opengis.referencing.datum" class="external-link">Ellipsoid</a>&nbsp;target,
  boolean&nbsp;isTarget3D,
  <a href="../../datum/DatumShiftGrid.html" title="class in org.apache.sis.referencing.datum">DatumShiftGrid</a>&lt;<a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/quantity/Angle.html" title="class or interface in javax.measure.quantity" class="external-link">Angle</a>,<wbr><a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/quantity/Length.html" title="class or interface in javax.measure.quantity" class="external-link">Length</a>&gt;&nbsp;grid)</span></div>
 <div class="block">Creates a transform from the specified parameters.
  This <code>InterpolatedGeocentricTransform</code> class expects coordinate values in the following order and units:
  <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 same units than the source ellipsoid axes.</li>
  </ol>

  For converting geographic coordinates in degrees, <code>InterpolatedGeocentricTransform</code> instances
  need to be concatenated with the following affine transforms:

  <ul>
    <li><cite>Normalization</cite> before <code>InterpolatedGeocentricTransform</code>:<ul>
      <li>Conversion of (λ,φ) from degrees to radians.</li>
    </ul></li>
    <li><cite>Denormalization</cite> after <code>InterpolatedGeocentricTransform</code>:<ul>
      <li>Conversion of (λ,φ) from radians to degrees.</li>
    </ul></li>
  </ul>

  After <code>InterpolatedGeocentricTransform</code> construction,
  the full conversion chain including the above affine transforms can be created by
  <code><a href="DatumShiftTransform.html#getContextualParameters()">DatumShiftTransform.getContextualParameters()</a>.<a href="ContextualParameters.html#completeTransform(org.opengis.referencing.operation.MathTransformFactory,org.opengis.referencing.operation.MathTransform)">completeTransform</a>(factory, this)}</code>.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>source</code> - the source ellipsoid.</dd>
 <dd><code>isSource3D</code> - <code>true</code> if the source coordinates have a height.</dd>
 <dd><code>target</code> - the target ellipsoid.</dd>
 <dd><code>isTarget3D</code> - <code>true</code> if the target coordinates have a height.</dd>
 <dd><code>grid</code> - the grid of datum shifts from source to target datum.
                     The <a href="../../datum/DatumShiftGrid.html#interpolateInCell(double,double,double%5B%5D)"><code>DatumShiftGrid.interpolateInCell(…)</code></a> method
                     shall compute (ΔX, ΔY, ΔZ) translations from <em>source</em> to <em>target</em> in the
                     unit of source ellipsoid axes.</dd>
 <dt>See Also:</dt>
 <dd>
 <ul class="tag-list-long">
 <li><a href="#createGeodeticTransformation(org.opengis.referencing.operation.MathTransformFactory,org.opengis.referencing.datum.Ellipsoid,boolean,org.opengis.referencing.datum.Ellipsoid,boolean,org.apache.sis.referencing.datum.DatumShiftGrid)"><code>createGeodeticTransformation(MathTransformFactory, Ellipsoid, boolean, Ellipsoid, boolean, DatumShiftGrid)</code></a></li>
 </ul>
 </dd>
 </dl>
 </section>
 </li>
 </ul>
 </section>
 </li>
 <!-- ============ METHOD DETAIL ========== -->
 <li>
 <section class="method-details" id="method-detail">
 <h2>Method Details</h2>
 <ul class="member-list">
 <li>
 <section class="detail" id="createGeodeticTransformation(org.opengis.referencing.operation.MathTransformFactory,org.opengis.referencing.datum.Ellipsoid,boolean,org.opengis.referencing.datum.Ellipsoid,boolean,org.apache.sis.referencing.datum.DatumShiftGrid)">
 <h3>createGeodeticTransformation</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransform.html" title="class or interface in org.opengis.referencing.operation" class="external-link">MathTransform</a></span>&nbsp;<span class="element-name">createGeodeticTransformation</span><wbr><span class="parameters">(<a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransformFactory.html" title="class or interface in org.opengis.referencing.operation" class="external-link">MathTransformFactory</a>&nbsp;factory,
  <a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/datum/Ellipsoid.html" title="class or interface in org.opengis.referencing.datum" class="external-link">Ellipsoid</a>&nbsp;source,
  boolean&nbsp;isSource3D,
  <a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/datum/Ellipsoid.html" title="class or interface in org.opengis.referencing.datum" class="external-link">Ellipsoid</a>&nbsp;target,
  boolean&nbsp;isTarget3D,
  <a href="../../datum/DatumShiftGrid.html" title="class in org.apache.sis.referencing.datum">DatumShiftGrid</a>&lt;<a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/quantity/Angle.html" title="class or interface in javax.measure.quantity" class="external-link">Angle</a>,<wbr><a href="http://unitsofmeasurement.github.io/unit-api/site/apidocs/javax/measure/quantity/Length.html" title="class or interface in javax.measure.quantity" class="external-link">Length</a>&gt;&nbsp;grid)</span>
                                                   throws <span class="exceptions"><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/util/FactoryException.html" title="class or interface in org.opengis.util" class="external-link">FactoryException</a></span></div>
 <div class="block">Creates a transformation between two geographic CRS. This factory method combines the
  <code>InterpolatedGeocentricTransform</code> instance with the steps needed for converting values between
  degrees to radians. The transform works with input and output coordinates in the following units:

  <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 same units than the source ellipsoids axes.</li>
  </ol>

  Note however that the given <code>grid</code> instance shall expect geographic coordinates (λ,φ)
  in <strong>radians</strong>.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>factory</code> - the factory to use for creating the transform.</dd>
 <dd><code>source</code> - the source ellipsoid.</dd>
 <dd><code>isSource3D</code> - <code>true</code> if the source coordinates have a height.</dd>
 <dd><code>target</code> - the target ellipsoid.</dd>
 <dd><code>isTarget3D</code> - <code>true</code> if the target coordinates have a height.</dd>
 <dd><code>grid</code> - the grid of datum shifts from source to target datum.
                     The <a href="../../datum/DatumShiftGrid.html#interpolateInCell(double,double,double%5B%5D)"><code>DatumShiftGrid.interpolateInCell(…)</code></a> method
                     shall compute (ΔX, ΔY, ΔZ) translations from <em>source</em> to <em>target</em> in the
                     unit of source ellipsoid axes.</dd>
 <dt>Returns:</dt>
 <dd>the transformation between geographic coordinates in degrees.</dd>
 <dt>Throws:</dt>
 <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/util/FactoryException.html" title="class or interface in org.opengis.util" class="external-link">FactoryException</a></code> - if an error occurred while creating a transform.</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getSourceDimensions()">
 <h3>getSourceDimensions</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">getSourceDimensions</span>()</div>
 <div class="block">Gets the dimension of input points.</div>
 <dl class="notes">
 <dt>Specified by:</dt>
 <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransform.html#getSourceDimensions()" title="class or interface in org.opengis.referencing.operation" class="external-link">getSourceDimensions</a></code>&nbsp;in interface&nbsp;<code><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransform.html" title="class or interface in org.opengis.referencing.operation" class="external-link">MathTransform</a></code></dd>
 <dt>Specified by:</dt>
 <dd><code><a href="AbstractMathTransform.html#getSourceDimensions()">getSourceDimensions</a></code>&nbsp;in class&nbsp;<code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd>
 <dt>Returns:</dt>
 <dd>the input dimension, which is 2 or 3.</dd>
 <dt>See Also:</dt>
 <dd>
 <ul class="tag-list-long">
 <li><a href="../DefaultOperationMethod.html#getSourceDimensions()"><code>DefaultOperationMethod.getSourceDimensions()</code></a></li>
 </ul>
 </dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getTargetDimensions()">
 <h3>getTargetDimensions</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">getTargetDimensions</span>()</div>
 <div class="block">Gets the dimension of output points.</div>
 <dl class="notes">
 <dt>Specified by:</dt>
 <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransform.html#getTargetDimensions()" title="class or interface in org.opengis.referencing.operation" class="external-link">getTargetDimensions</a></code>&nbsp;in interface&nbsp;<code><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransform.html" title="class or interface in org.opengis.referencing.operation" class="external-link">MathTransform</a></code></dd>
 <dt>Specified by:</dt>
 <dd><code><a href="AbstractMathTransform.html#getTargetDimensions()">getTargetDimensions</a></code>&nbsp;in class&nbsp;<code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd>
 <dt>Returns:</dt>
 <dd>the output dimension, which is 2 or 3.</dd>
 <dt>See Also:</dt>
 <dd>
 <ul class="tag-list-long">
 <li><a href="../DefaultOperationMethod.html#getTargetDimensions()"><code>DefaultOperationMethod.getTargetDimensions()</code></a></li>
 </ul>
 </dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="transform(double[],int,double[],int,boolean)">
 <h3>transform</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/Matrix.html" title="class or interface in org.opengis.referencing.operation" class="external-link">Matrix</a></span>&nbsp;<span class="element-name">transform</span><wbr><span class="parameters">(double[]&nbsp;srcPts,
  int&nbsp;srcOff,
  double[]&nbsp;dstPts,
  int&nbsp;dstOff,
  boolean&nbsp;derivate)</span>
                  throws <span class="exceptions"><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/TransformException.html" title="class or interface in org.opengis.referencing.operation" class="external-link">TransformException</a></span></div>
 <div class="block">Transforms the (λ,φ) or (λ,φ,<var>h</var>) coordinates between two geographic CRS,
  and optionally returns the derivative at that location.</div>
 <dl class="notes">
 <dt>Specified by:</dt>
 <dd><code><a href="AbstractMathTransform.html#transform(double%5B%5D,int,double%5B%5D,int,boolean)">transform</a></code>&nbsp;in class&nbsp;<code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd>
 <dt>Parameters:</dt>
 <dd><code>srcPts</code> - the array containing the source coordinates (cannot 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 coordinates 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>Returns:</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>Throws:</dt>
 <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/TransformException.html" title="class or interface in org.opengis.referencing.operation" class="external-link">TransformException</a></code> - if the point cannot be transformed or
          if a problem occurred while calculating the derivative.</dd>
 <dt>See Also:</dt>
 <dd>
 <ul class="tag-list-long">
 <li><a href="AbstractMathTransform.html#derivative(org.opengis.geometry.DirectPosition)"><code>AbstractMathTransform.derivative(DirectPosition)</code></a></li>
 <li><a href="AbstractMathTransform.html#transform(org.opengis.geometry.DirectPosition,org.opengis.geometry.DirectPosition)"><code>AbstractMathTransform.transform(DirectPosition, DirectPosition)</code></a></li>
 <li><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></li>
 </ul>
 </dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="inverse()">
 <h3>inverse</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransform.html" title="class or interface in org.opengis.referencing.operation" class="external-link">MathTransform</a></span>&nbsp;<span class="element-name">inverse</span>()</div>
 <div class="block">Returns the inverse of this interpolated geocentric transform.
  The source ellipsoid of the returned transform will be the target ellipsoid of this transform, and conversely.</div>
 <dl class="notes">
 <dt>Specified by:</dt>
 <dd><code><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransform.html#inverse()" title="class or interface in org.opengis.referencing.operation" class="external-link">inverse</a></code>&nbsp;in interface&nbsp;<code><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/MathTransform.html" title="class or interface in org.opengis.referencing.operation" class="external-link">MathTransform</a></code></dd>
 <dt>Overrides:</dt>
 <dd><code><a href="AbstractMathTransform.html#inverse()">inverse</a></code>&nbsp;in class&nbsp;<code><a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></code></dd>
 <dt>Returns:</dt>
 <dd>a transform from the target ellipsoid to the source ellipsoid of this transform.</dd>
 </dl>
 </section>
 </li>
 </ul>
 </section>
 </li>
 </ul>
 </section>
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