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

 <!DOCTYPE HTML>
 <html lang="en">
 <head>
 <!-- Generated by javadoc (19) -->
 <title>DatumShiftTransform (Apache SIS 1.3 API)</title>
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <meta name="description" content="declaration: package: org.apache.sis.referencing.operation.transform, class: DatumShiftTransform">
 <meta name="generator" content="javadoc/ClassWriterImpl">
 <meta name="keywords" content="org.apache.sis.referencing.operation.transform.DatumShiftTransform class">
 <meta name="keywords" content="getParameterValues()">
 <meta name="keywords" content="getContextualParameters()">
 <meta name="keywords" content="computeHashCode()">
 <meta name="keywords" content="equals()">
 <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style">
 <link rel="stylesheet" type="text/css" href="../../../../../../sis.css" title="Style">
 <link rel="stylesheet" type="text/css" href="../../../../../../script-dir/jquery-ui.min.css" title="Style">
 <link rel="stylesheet" type="text/css" href="../../../../../../jquery-ui.overrides.css" title="Style">
 <script type="text/javascript" src="../../../../../../script.js"></script>
 <script type="text/javascript" src="../../../../../../script-dir/jquery-3.6.0.min.js"></script>
 <script type="text/javascript" src="../../../../../../script-dir/jquery-ui.min.js"></script>
 </head>
 <body class="class-declaration-page">
 <script type="text/javascript">var pathtoroot = "../../../../../../";
 loadScripts(document, 'script');</script>
 <noscript>
 <div>JavaScript is disabled on your browser.</div>
 </noscript>
 <div class="flex-box">
 <header role="banner" class="flex-header">
 <nav role="navigation">
 <!-- ========= START OF TOP NAVBAR ======= -->
 <div class="top-nav" id="navbar-top"><button id="navbar-toggle-button" aria-controls="navbar-top" aria-expanded="false" aria-label="Toggle navigation links"><span class="nav-bar-toggle-icon">&nbsp;</span><span class="nav-bar-toggle-icon">&nbsp;</span><span class="nav-bar-toggle-icon">&nbsp;</span></button>
 <div class="skip-nav"><a href="#skip-navbar-top" title="Skip navigation links">Skip navigation links</a></div>
 <ul id="navbar-top-firstrow" class="nav-list" title="Navigation">
 <li><a href="../../../../../../index.html">Overview</a></li>
 <li><a href="package-summary.html">Package</a></li>
 <li class="nav-bar-cell1-rev">Class</li>
 <li><a href="class-use/DatumShiftTransform.html">Use</a></li>
 <li><a href="package-tree.html">Tree</a></li>
 <li><a href="../../../../../../deprecated-list.html">Deprecated</a></li>
 <li><a href="../../../../../../index-all.html">Index</a></li>
 <li><a href="../../../../../../help-doc.html#class">Help</a></li>
 </ul>
 <ul class="sub-nav-list-small">
 <li>
 <p>Summary:</p>
 <ul>
 <li><a href="#nested-class-summary">Nested</a></li>
 <li>Field</li>
 <li>Constr</li>
 <li><a href="#method-summary">Method</a></li>
 </ul>
 </li>
 <li>
 <p>Detail:</p>
 <ul>
 <li>Field</li>
 <li>Constr</li>
 <li><a href="#method-detail">Method</a></li>
 </ul>
 </li>
 </ul>
 </div>
 <div class="sub-nav">
 <div id="navbar-sub-list">
 <ul class="sub-nav-list">
 <li>Summary:&nbsp;</li>
 <li><a href="#nested-class-summary">Nested</a>&nbsp;|&nbsp;</li>
 <li>Field&nbsp;|&nbsp;</li>
 <li>Constr&nbsp;|&nbsp;</li>
 <li><a href="#method-summary">Method</a></li>
 </ul>
 <ul class="sub-nav-list">
 <li>Detail:&nbsp;</li>
 <li>Field&nbsp;|&nbsp;</li>
 <li>Constr&nbsp;|&nbsp;</li>
 <li><a href="#method-detail">Method</a></li>
 </ul>
 </div>
 <div class="nav-list-search"><a href="../../../../../../search.html">SEARCH</a>
 <input type="text" id="search-input" disabled placeholder="Search">
 <input type="reset" id="reset-button" disabled value="reset">
 </div>
 </div>
 <!-- ========= END OF TOP NAVBAR ========= -->
 <span class="skip-nav" id="skip-navbar-top"></span></nav>
 </header>
 <div class="flex-content">
 <main role="main">
 <!-- ======== START OF CLASS DATA ======== -->
 <div class="header">
 <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 DatumShiftTransform" class="title">Class DatumShiftTransform</h1>
 </div>
 <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/16/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">DatumShiftTransform</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/16/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="../../../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>
 <dl class="notes">
 <dt>Direct Known Subclasses:</dt>
 <dd><code><a href="InterpolatedGeocentricTransform.html" title="class in org.apache.sis.referencing.operation.transform">InterpolatedGeocentricTransform</a></code>, <code><a href="InterpolatedMolodenskyTransform.html" title="class in org.apache.sis.referencing.operation.transform">InterpolatedMolodenskyTransform</a></code>, <code><a href="InterpolatedTransform.html" title="class in org.apache.sis.referencing.operation.transform">InterpolatedTransform</a></code>, <code><a href="MolodenskyTransform.html" title="class in org.apache.sis.referencing.operation.transform">MolodenskyTransform</a></code></dd>
 </dl>
 <hr>
 <div class="type-signature"><span class="modifiers">public abstract class </span><span class="element-name type-name-label">DatumShiftTransform</span>
 <span class="extends-implements">extends <a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a>
 implements <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/io/Serializable.html" title="class or interface in java.io" class="external-link">Serializable</a></span></div>
 <div class="block">Transforms between two CRS (usually geographic) based on different datum. A datum shift may be needed when two CRS
  use different <a href="../../datum/DefaultEllipsoid.html" title="class in org.apache.sis.referencing.datum">ellipsoids</a> as approximation of the
  shape of the Earth. Sometimes two CRS use the same ellipsoid but with different anchor point (i.e. their coordinate
  systems have their origin in different locations).

  <p>There is many different datum shift methods, ranging from transformations as simple as adding a constant offset
  to geographic coordinates, to more complex transformations involving conversions to geocentric coordinates and/or
  interpolations in a <a href="../../datum/DatumShiftGrid.html" title="class in org.apache.sis.referencing.datum">datum shift grid</a>. The simple cases like adding a constant offset
  are handled by other <code>MathTransform</code> implementations like <a href="LinearTransform.html" title="interface in org.apache.sis.referencing.operation.transform"><code>LinearTransform</code></a>.
  More complex methods are subclasses of this <code>DatumShiftTransform</code> base class, but users should not assume
  that this is the case of every transforms performing a datum shift.</p>

  <h2>Datum shift methods overview</h2>
  The two CRS's ellipsoids have slightly different scale and rotation in space, and their center are located in
  a slightly different position. Consequently, geodetic datum shifts are often approximated by a constant scale,
  rotation and translation applied on geocentric coordinates. Those approximations are handled in SIS
  by concatenations of <a href="EllipsoidToCentricTransform.html" title="class in org.apache.sis.referencing.operation.transform"><code>EllipsoidToCentricTransform</code></a> with <a href="LinearTransform.html" title="interface in org.apache.sis.referencing.operation.transform"><code>LinearTransform</code></a> instead of a specific
  <code>DatumShiftTransform</code> subclass.

  <p>If the geodetic datum shifts is approximated only by a geocentric translation without any scale or rotation,
  and if an error of a few centimetres it acceptable, then the <a href="MolodenskyTransform.html" title="class in org.apache.sis.referencing.operation.transform"><code>MolodenskyTransform</code></a> subclass can be used
  as an approximation of the above method. The Molodensky method requires less floating point operations since
  it applies directly on geographic coordinates, without conversions to geocentric coordinates.</p>

  <p>Some countries go one step further and allow the above geocentric translations to be non-constant.
  Instead, a different geocentric translation is interpolated for each geographic input coordinates.
  This case is handled by the <a href="InterpolatedGeocentricTransform.html" title="class in org.apache.sis.referencing.operation.transform"><code>InterpolatedGeocentricTransform</code></a> subclass, or its
  <a href="InterpolatedMolodenskyTransform.html" title="class in org.apache.sis.referencing.operation.transform"><code>InterpolatedMolodenskyTransform</code></a> variant if a few centimetres accuracy lost can be afforded.</p>

  <p>A simpler alternative to the above is to interpolate translations to apply directly on geographic coordinates.
  This is the approach taken by NADCON and NTv2 grids.
  SIS handles those datum shifts with the <a href="InterpolatedTransform.html" title="class in org.apache.sis.referencing.operation.transform"><code>InterpolatedTransform</code></a> subclass.</p></div>
 <dl class="notes">
 <dt>Since:</dt>
 <dd>0.7</dd>
 <dt>See Also:</dt>
 <dd>
 <ul class="see-list">
 <li><a href="../../datum/DatumShiftGrid.html" title="class in org.apache.sis.referencing.datum"><code>DatumShiftGrid</code></a></li>
 <li><a href="../../../../../../serialized-form.html#org.apache.sis.referencing.operation.transform.DatumShiftTransform">Serialized Form</a></li>
 </ul>
 </dd>

 <p><font size="-1">Defined in the <code>sis-referencing</code> module</font></p>
 </dl>
 </section>
 <section class="summary">
 <ul class="summary-list">
 <!-- ======== NESTED CLASS SUMMARY ======== -->
 <li>
 <section class="nested-class-summary" id="nested-class-summary">
 <h2>Nested Class Summary</h2>
 <div class="inherited-list">
 <h2 id="nested-classes-inherited-from-class-org.apache.sis.referencing.operation.transform.AbstractMathTransform">Nested classes/interfaces inherited from class&nbsp;<a href="AbstractMathTransform.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform</a></h2>
 <code><a href="AbstractMathTransform.Inverse.html" title="class in org.apache.sis.referencing.operation.transform">AbstractMathTransform.Inverse</a></code></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-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-tab2 method-summary-table-tab4"><code>protected int</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#computeHashCode()" class="member-name-link">computeHashCode</a>()</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Computes a hash value for this transform.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#equals(java.lang.Object,org.apache.sis.util.ComparisonMode)" class="member-name-link">equals</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>&nbsp;object,
  <a href="../../../util/ComparisonMode.html" title="enum class in org.apache.sis.util">ComparisonMode</a>&nbsp;mode)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Compares the specified object with this math transform for equality.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>protected <a href="ContextualParameters.html" title="class in org.apache.sis.referencing.operation.transform">ContextualParameters</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getContextualParameters()" class="member-name-link">getContextualParameters</a>()</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
 <div class="block">Returns the parameters used for creating the complete transformation.</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/parameter/ParameterValueGroup.html" title="class or interface in org.opengis.parameter" class="external-link">ParameterValueGroup</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getParameterValues()" class="member-name-link">getParameterValues</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 internal parameter values of this <code>DatumShiftTransform</code> instance (ignoring context).</div>
 </div>
 </div>
 </div>
 </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#getSourceDimensions()">getSourceDimensions</a>, <a href="AbstractMathTransform.html#getTargetDimensions()">getTargetDimensions</a>, <a href="AbstractMathTransform.html#hashCode()">hashCode</a>, <a href="AbstractMathTransform.html#inverse()">inverse</a>, <a href="AbstractMathTransform.html#isIdentity()">isIdentity</a>, <a href="AbstractMathTransform.html#transform(double%5B%5D,int,double%5B%5D,int,boolean)">transform</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/16/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/16/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/16/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/16/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/16/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/16/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/16/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/16/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/16/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">
 <!-- ============ METHOD DETAIL ========== -->
 <li>
 <section class="method-details" id="method-detail">
 <h2>Method Details</h2>
 <ul class="member-list">
 <li>
 <section class="detail" id="getParameterValues()">
 <h3>getParameterValues</h3>
 <div class="member-signature"><span class="annotations"><a href="../../../util/Debug.html" title="annotation interface in org.apache.sis.util">@Debug</a>
 </span><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/parameter/ParameterValueGroup.html" title="class or interface in org.opengis.parameter" class="external-link">ParameterValueGroup</a></span>&nbsp;<span class="element-name">getParameterValues</span>()</div>
 <div class="block">Returns the internal parameter values of this <code>DatumShiftTransform</code> instance (ignoring context).
  The parameters returned by this method do not necessarily describe the whole datum shift process,
  because <code>DatumShiftTransform</code> instances are often preceeded and followed by linear conversions.
  It may be conversions between degrees and radians units, or conversions from geodetic coordinates to grid indices.

  <div class="note"><b>Example:</b>
    The chain of transforms of an <a href="InterpolatedGeocentricTransform.html" title="class in org.apache.sis.referencing.operation.transform"><code>InterpolatedGeocentricTransform</code></a> is:
    <div class="horizontal-flow" style="align-items:center">
      <div>    <math display="block" alttext="MathML capable browser required">
       <mrow>
         <mo>[</mo>
         <mtable>
           <mtr>
             <mtd><mi>π</mi><mo>/</mo><mn>180</mn></mtd>
             <mtd><mn>0</mn></mtd>
             <mtd><mo>-</mo><msub><mi>λ</mi><mn>0</mn></msub> <mo>⋅</mo> <mo>(</mo><mi>π</mi><mo>/</mo><mn>180</mn><mo>)</mo></mtd>
           </mtr>
           <mtr>
             <mtd><mn>0</mn></mtd>
             <mtd><mi>π</mi><mo>/</mo><mn>180</mn></mtd>
             <mtd><mn>0</mn></mtd>
           </mtr>
           <mtr>
             <mtd><mn>0</mn></mtd>
             <mtd><mn>0</mn></mtd>
             <mtd><mn>1</mn></mtd>
           </mtr>
         </mtable>
         <mo>]</mo>
       </mrow>
     </math>


 </div>
      <div>→</div>
      <div><ol style="padding-left: 15px">
        <li>Geographic to geocentric conversion</li>
        <li>Geocentric interpolation</li>
        <li>Geocentric to geographic conversion</li>
      </ol></div>
      <div>→</div>
      <div>    <math display="block" alttext="MathML capable browser required">
       <mrow>
         <mo>[</mo>
         <mtable>
           <mtr>
             <mtd><mi>180</mi><mo>/</mo><mn>π</mn></mtd>
             <mtd><mn>0</mn></mtd>
             <mtd><msub><mi>λ</mi><mn>0</mn></msub></mtd>
           </mtr>
           <mtr>
             <mtd><mn>0</mn></mtd>
             <mtd><mi>180</mi><mo>/</mo><mn>π</mn></mtd>
             <mtd><mn>0</mn></mtd>
           </mtr>
           <mtr>
             <mtd><mn>0</mn></mtd>
             <mtd><mn>0</mn></mtd>
             <mtd><mn>1</mn></mtd>
           </mtr>
         </mtable>
         <mo>]</mo>
       </mrow>
     </math>


 </div>
    </div>
  </div>

  This method returns the parameters for the part in the middle of above example.
  The content of this part is highly implementation-dependent and used mostly for
  <a href="../../../io/wkt/Convention.html#INTERNAL">debugging purposes</a>.
  The parameters that describe the process as a whole are rather given by <a href="#getContextualParameters()"><code>getContextualParameters()</code></a>.</div>
 <dl class="notes">
 <dt>Specified by:</dt>
 <dd><code><a href="../../../parameter/Parameterized.html#getParameterValues()">getParameterValues</a></code>&nbsp;in interface&nbsp;<code><a href="../../../parameter/Parameterized.html" title="interface in org.apache.sis.parameter">Parameterized</a></code></dd>
 <dt>Overrides:</dt>
 <dd><code><a href="AbstractMathTransform.html#getParameterValues()">getParameterValues</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 internal parameter values for this transform.</dd>
 <dt>See Also:</dt>
 <dd>
 <ul class="see-list-long">
 <li><a href="AbstractMathTransform.html#getContextualParameters()"><code>AbstractMathTransform.getContextualParameters()</code></a></li>
 <li><a href="http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/referencing/operation/SingleOperation.html#getParameterValues()" title="class or interface in org.opengis.referencing.operation" class="external-link"><code>SingleOperation.getParameterValues()</code></a></li>
 </ul>
 </dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getContextualParameters()">
 <h3>getContextualParameters</h3>
 <div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="return-type"><a href="ContextualParameters.html" title="class in org.apache.sis.referencing.operation.transform">ContextualParameters</a></span>&nbsp;<span class="element-name">getContextualParameters</span>()</div>
 <div class="block">Returns the parameters used for creating the complete transformation. 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 class="notes">
 <dt>Overrides:</dt>
 <dd><code><a href="AbstractMathTransform.html#getContextualParameters()">getContextualParameters</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 parameter values for the sequence of
          <cite>normalize</cite> → <code>this</code> → <cite>denormalize</cite> transforms.</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="computeHashCode()">
 <h3>computeHashCode</h3>
 <div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">computeHashCode</span>()</div>
 <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 class="notes">
 <dt>Overrides:</dt>
 <dd><code><a href="AbstractMathTransform.html#computeHashCode()">computeHashCode</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 hash code value. This value may change between different execution of the Apache SIS library.</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="equals(java.lang.Object,org.apache.sis.util.ComparisonMode)">
 <h3>equals</h3>
 <div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">equals</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>&nbsp;object,
  <a href="../../../util/ComparisonMode.html" title="enum class in org.apache.sis.util">ComparisonMode</a>&nbsp;mode)</span></div>
 <div class="block">Compares the specified object with this math transform for equality.</div>
 <dl class="notes">
 <dt>Specified by:</dt>
 <dd><code><a href="../../../util/LenientComparable.html#equals(java.lang.Object,org.apache.sis.util.ComparisonMode)">equals</a></code>&nbsp;in interface&nbsp;<code><a href="../../../util/LenientComparable.html" title="interface in org.apache.sis.util">LenientComparable</a></code></dd>
 <dt>Overrides:</dt>
 <dd><code><a href="AbstractMathTransform.html#equals(java.lang.Object,org.apache.sis.util.ComparisonMode)">equals</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>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>Returns:</dt>
 <dd><code>true</code> if the given object is considered equals to this math transform.</dd>
 <dt>See Also:</dt>
 <dd>
 <ul class="see-list-long">
 <li><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></li>
 </ul>
 </dd>
 </dl>
 </section>
 </li>
 </ul>
 </section>
 </li>
 </ul>
 </section>
 <!-- ========= END OF CLASS DATA ========= -->
 </main>
 <footer role="contentinfo">
 <hr>
 <p class="legal-copy"><small>Copyright &#169; 2010&#x2013;2022 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p>
 </footer>
 </div>
 </div>
 </body>
 </html>