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<h2 title="Class TimeDependentBWP" class="title">Class TimeDependentBWP</h2>
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<pre>public class <span class="typeNameLabel">TimeDependentBWP</span>
extends <a href="BursaWolfParameters.html" title="class in org.apache.sis.referencing.datum">BursaWolfParameters</a></pre>
<div class="block">Parameters for a time-dependent geographic transformation between two datum.
The <a href="BursaWolfParameters.html#tX"><code>t­X</code></a>, <a href="BursaWolfParameters.html#tY"><code>t­Y</code></a>, <a href="BursaWolfParameters.html#tZ"><code>t­Z</code></a>, <a href="BursaWolfParameters.html#rX"><code>r­X</code></a>, <a href="BursaWolfParameters.html#rY"><code>r­Y</code></a>, <a href="BursaWolfParameters.html#rZ"><code>r­Z</code></a>
and <a href="BursaWolfParameters.html#dS"><code>d­S</code></a> parameters inherited from the parent class are values at a point in time given
by <a href="#getTimeReference()"><code>get­Time­Reference()</code></a>. Those values vary at a rate given by the parameters listed in the
table below (codes, names and abbreviations are from the EPSG database):
<table class="sis">
<caption>Parameters defined by EPSG</caption>
<tr><th>Code</th> <th>Name</th> <th>Abbr.</th></tr>
<tr><td>1040</td> <td>Rate of change of X-axis translation</td> <td><a href="#dtX"><code>dtX</code></a></td></tr>
<tr><td>1041</td> <td>Rate of change of Y-axis translation</td> <td><a href="#dtY"><code>dtY</code></a></td></tr>
<tr><td>1042</td> <td>Rate of change of Z-axis translation</td> <td><a href="#dtZ"><code>dtZ</code></a></td></tr>
<tr><td>1043</td> <td>Rate of change of X-axis rotation</td> <td><a href="#drX"><code>drX</code></a></td></tr>
<tr><td>1044</td> <td>Rate of change of Y-axis rotation</td> <td><a href="#drY"><code>drY</code></a></td></tr>
<tr><td>1045</td> <td>Rate of change of Z-axis rotation</td> <td><a href="#drZ"><code>drZ</code></a></td></tr>
<tr><td>1046</td> <td>Rate of change of scale difference</td> <td><a href="#ddS"><code>ddS</code></a></td></tr>
</table>
The numerical fields in this <code>Time­Dependent­BWP</code> class uses the EPSG abbreviations
with 4 additional constraints compared to the EPSG definitions:
<ul>
<li>Unit of <a href="#ddS"><code>dd­S</code></a> is fixed to <em>parts per million per year</em>.</li>
<li>Unit of <a href="#dtX"><code>dt­X</code></a>, <a href="#dtY"><code>dt­Y</code></a> and <a href="#dtZ"><code>dt­Z</code></a> is fixed to <em>millimetres per year</em>.</li>
<li>Unit of <a href="#drX"><code>dr­X</code></a>, <a href="#drY"><code>dr­Y</code></a> and <a href="#drZ"><code>dr­Z</code></a> is fixed to <em>milli arc-seconds per year</em>.</li>
<li>Sign of rotation terms is fixed to the <em>Position Vector</em> convention (EPSG operation method 1053).
This is the opposite sign than the <cite>Coordinate Frame Rotation</cite> (EPSG operation method 1056.
The Position Vector convention is used by IAG and recommended by ISO 19111.</li>
</ul></div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>0.4</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../serialized-form.html#org.apache.sis.referencing.datum.TimeDependentBWP">Serialized Form</a></dd>
<p><font size="-1">Defined in the <code>sis-referencing</code> module</font></p>
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<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#ddS">ddS</a></span></code></th>
<td class="colLast">
<div class="block">Rate of change of the scale difference in parts per million per year (EPSG:1046).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#drX">drX</a></span></code></th>
<td class="colLast">
<div class="block">Rate of change of X-axis rotation in milli arc-seconds per year (EPSG:1043),
sign following the <cite>Position Vector</cite> convention.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#drY">drY</a></span></code></th>
<td class="colLast">
<div class="block">Rate of change of Y-axis rotation in milli arc-seconds per year (EPSG:1044),
sign following the <cite>Position Vector</cite> convention.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#drZ">drZ</a></span></code></th>
<td class="colLast">
<div class="block">Rate of change of Z-axis rotation in milli arc-seconds per year (EPSG:1045),
sign following the <cite>Position Vector</cite> convention.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#dtX">dtX</a></span></code></th>
<td class="colLast">
<div class="block">Rate of change of X-axis translation in millimetres per year (EPSG:1040).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#dtY">dtY</a></span></code></th>
<td class="colLast">
<div class="block">Rate of change of Y-axis translation in millimetres per year (EPSG:1041).</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#dtZ">dtZ</a></span></code></th>
<td class="colLast">
<div class="block">Rate of change of Z-axis translation in millimetres per year (EPSG:1042).</div>
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<code><a href="BursaWolfParameters.html#dS">d­S</a>, <a href="BursaWolfParameters.html#rX">r­X</a>, <a href="BursaWolfParameters.html#rY">r­Y</a>, <a href="BursaWolfParameters.html#rZ">r­Z</a>, <a href="BursaWolfParameters.html#tX">t­X</a>, <a href="BursaWolfParameters.html#tY">t­Y</a>, <a href="BursaWolfParameters.html#tZ">t­Z</a></code></li>
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<th class="colFirst" scope="col">Constructor</th>
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<tr class="altColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.opengis.referencing.datum.GeodeticDatum,org.opengis.metadata.extent.Extent,java.util.Date)">TimeDependentBWP</a></span>&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/datum/GeodeticDatum.html?is-external=true" title="class or interface in org.opengis.referencing.datum" class="externalLink">GeodeticDatum</a>&nbsp;targetDatum,
<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/extent/Extent.html?is-external=true" title="class or interface in org.opengis.metadata.extent" class="externalLink">Extent</a>&nbsp;domainOfValidity,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util" class="externalLink">Date</a>&nbsp;timeReference)</code></th>
<td class="colLast">
<div class="block">Creates a new instance for the given target datum, domain of validity and time reference.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#equals(java.lang.Object)">equals</a></span>&#8203;(<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>&nbsp;object)</code></th>
<td class="colLast">
<div class="block">Compares the specified object with this object for equality.</div>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util" class="externalLink">Date</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTimeReference()">getTimeReference</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the reference epoch for time-dependent parameters.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>double[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getValues()">getValues</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the parameter values.</div>
</td>
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<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hashCode()">hashCode</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a hash value for this object.</div>
</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isIdentity()">isIdentity</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns <code>true</code> if a transformation built from this set of parameters would perform no operation.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isTranslation()">isTranslation</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns <code>true</code> if a transformation built from this set of parameters would perform only a translation.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#reverseRotation()">reverseRotation</a></span>()</code></th>
<td class="colLast">
<div class="block">Inverts in-place the sign of rotation terms and their derivative.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setValues(double...)">setValues</a></span>&#8203;(double...&nbsp;elements)</code></th>
<td class="colLast">
<div class="block">Sets the parameters to the given values.</div>
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<h4>dtX</h4>
<pre>public&nbsp;double dtX</pre>
<div class="block">Rate of change of X-axis translation in millimetres per year (EPSG:1040).</div>
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<h4>dtY</h4>
<pre>public&nbsp;double dtY</pre>
<div class="block">Rate of change of Y-axis translation in millimetres per year (EPSG:1041).</div>
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<h4>dtZ</h4>
<pre>public&nbsp;double dtZ</pre>
<div class="block">Rate of change of Z-axis translation in millimetres per year (EPSG:1042).</div>
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<h4>drX</h4>
<pre>public&nbsp;double drX</pre>
<div class="block">Rate of change of X-axis rotation in milli arc-seconds per year (EPSG:1043),
sign following the <cite>Position Vector</cite> convention.</div>
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<h4>drY</h4>
<pre>public&nbsp;double drY</pre>
<div class="block">Rate of change of Y-axis rotation in milli arc-seconds per year (EPSG:1044),
sign following the <cite>Position Vector</cite> convention.</div>
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<h4>drZ</h4>
<pre>public&nbsp;double drZ</pre>
<div class="block">Rate of change of Z-axis rotation in milli arc-seconds per year (EPSG:1045),
sign following the <cite>Position Vector</cite> convention.</div>
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<h4>ddS</h4>
<pre>public&nbsp;double ddS</pre>
<div class="block">Rate of change of the scale difference in parts per million per year (EPSG:1046).</div>
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<h4>TimeDependentBWP</h4>
<pre>public&nbsp;TimeDependentBWP&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/datum/GeodeticDatum.html?is-external=true" title="class or interface in org.opengis.referencing.datum" class="externalLink">GeodeticDatum</a>&nbsp;targetDatum,
<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/extent/Extent.html?is-external=true" title="class or interface in org.opengis.metadata.extent" class="externalLink">Extent</a>&nbsp;domainOfValidity,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util" class="externalLink">Date</a>&nbsp;timeReference)</pre>
<div class="block">Creates a new instance for the given target datum, domain of validity and time reference.
All numerical parameters are initialized to 0, which correspond to an identity transform.
Callers can assign numerical values to the public fields of interest after construction.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>target­Datum</code> - the target datum (usually WGS 84) for this set of parameters.</dd>
<dd><code>domain­Of­Validity</code> - area or region in which a coordinate transformation based on those Bursa-Wolf parameters
is valid, or <code>null</code> is unspecified.</dd>
<dd><code>time­Reference</code> - the reference epoch for time-dependent parameters.</dd>
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<h4>getTimeReference</h4>
<pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util" class="externalLink">Date</a>&nbsp;getTimeReference()</pre>
<div class="block">Returns the reference epoch for time-dependent parameters.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>the reference epoch for time-dependent parameters.</dd>
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<h4>getValues</h4>
<pre class="methodSignature">public&nbsp;double[]&nbsp;getValues()</pre>
<div class="block">Returns the parameter values. The first 14 elements are always <a href="BursaWolfParameters.html#tX"><code>t­X</code></a>, <a href="BursaWolfParameters.html#tY"><code>t­Y</code></a>, <a href="BursaWolfParameters.html#tZ"><code>t­Z</code></a>,
<a href="BursaWolfParameters.html#rX"><code>r­X</code></a>, <a href="BursaWolfParameters.html#rY"><code>r­Y</code></a>, <a href="BursaWolfParameters.html#rZ"><code>r­Z</code></a>, <a href="BursaWolfParameters.html#dS"><code>d­S</code></a>, <a href="#dtX"><code>dt­X</code></a>, <a href="#dtY"><code>dt­Y</code></a>, <a href="#dtZ"><code>dt­Z</code></a>,
<a href="#drX"><code>dr­X</code></a>, <a href="#drY"><code>dr­Y</code></a>, <a href="#drZ"><code>dr­Z</code></a> and <a href="#ddS"><code>dd­S</code></a> in that order.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="BursaWolfParameters.html#getValues()">get­Values</a></code>&nbsp;in class&nbsp;<code><a href="BursaWolfParameters.html" title="class in org.apache.sis.referencing.datum">Bursa­Wolf­Parameters</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the parameter values as an array of length 14.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>0.6</dd>
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<pre class="methodSignature">public&nbsp;void&nbsp;setValues&#8203;(double...&nbsp;elements)</pre>
<div class="block">Sets the parameters to the given values. The given array can have any length. The first array elements will be
assigned to the <a href="BursaWolfParameters.html#tX"><code>t­X</code></a>, <a href="BursaWolfParameters.html#tY"><code>t­Y</code></a>, <a href="BursaWolfParameters.html#tZ"><code>t­Z</code></a>, <a href="BursaWolfParameters.html#rX"><code>r­X</code></a>, <a href="BursaWolfParameters.html#rY"><code>r­Y</code></a>, <a href="BursaWolfParameters.html#rZ"><code>r­Z</code></a>,
<a href="BursaWolfParameters.html#dS"><code>d­S</code></a>, <a href="#dtX"><code>dt­X</code></a>, <a href="#dtY"><code>dt­Y</code></a>, <a href="#dtZ"><code>dt­Z</code></a>, <a href="#drX"><code>dr­X</code></a>, <a href="#drY"><code>dr­Y</code></a>, <a href="#drZ"><code>dr­Z</code></a> and
<a href="#ddS"><code>dd­S</code></a> fields in that order.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="BursaWolfParameters.html#setValues(double...)">set­Values</a></code>&nbsp;in class&nbsp;<code><a href="BursaWolfParameters.html" title="class in org.apache.sis.referencing.datum">Bursa­Wolf­Parameters</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>elements</code> - the new parameter values, as an array of any length.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>0.6</dd>
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<h4>isIdentity</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;isIdentity()</pre>
<div class="block">Returns <code>true</code> if a transformation built from this set of parameters would perform no operation.
This is true when the value of all parameters is zero.</div>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="BursaWolfParameters.html#isIdentity()">is­Identity</a></code>&nbsp;in class&nbsp;<code><a href="BursaWolfParameters.html" title="class in org.apache.sis.referencing.datum">Bursa­Wolf­Parameters</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>true</code> if the parameters describe no operation.</dd>
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<h4>isTranslation</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;isTranslation()</pre>
<div class="block">Returns <code>true</code> if a transformation built from this set of parameters would perform only a translation.</div>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="BursaWolfParameters.html#isTranslation()">is­Translation</a></code>&nbsp;in class&nbsp;<code><a href="BursaWolfParameters.html" title="class in org.apache.sis.referencing.datum">Bursa­Wolf­Parameters</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>true</code> if the parameters describe a translation only.</dd>
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<h4>reverseRotation</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;reverseRotation()</pre>
<div class="block">Inverts in-place the sign of rotation terms and their derivative.
This method can be invoked for converting a <cite>Coordinate Frame Rotation</cite> transformation
(EPSG operation method 9607) to a <em>Position Vector</em> transformation (EPSG operation method 9606).
The later convention is used by IAG and recommended by ISO 19111.</div>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="BursaWolfParameters.html#reverseRotation()">reverse­Rotation</a></code>&nbsp;in class&nbsp;<code><a href="BursaWolfParameters.html" title="class in org.apache.sis.referencing.datum">Bursa­Wolf­Parameters</a></code></dd>
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<h4>equals</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;equals&#8203;(<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>&nbsp;object)</pre>
<div class="block">Compares the specified object with this object for equality.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="BursaWolfParameters.html#equals(java.lang.Object)">equals</a></code>&nbsp;in class&nbsp;<code><a href="BursaWolfParameters.html" title="class in org.apache.sis.referencing.datum">Bursa­Wolf­Parameters</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>object</code> - the object to compare with the parameters.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>true</code> if the given object is equal to this <code>Time­Dependent­BWP</code>.</dd>
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<h4>hashCode</h4>
<pre class="methodSignature">public&nbsp;int&nbsp;hashCode()</pre>
<div class="block">Returns a hash value for this object.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="BursaWolfParameters.html#hashCode()">hash­Code</a></code>&nbsp;in class&nbsp;<code><a href="BursaWolfParameters.html" title="class in org.apache.sis.referencing.datum">Bursa­Wolf­Parameters</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the hash code value. This value does not need to be the same in past or future versions of this class.</dd>
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