static/apidocs/org/apache/sis/referencing/operation/CoordinateOperationContext.html - sis-site - Git at Google

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 <div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.sis.referencing.operation</a></div>
 <h2 title="Class CoordinateOperationContext" class="title">Class CoordinateOperationContext</h2>
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 <pre>public class <span class="typeNameLabel">CoordinateOperationContext</span>
 extends <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>
 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">Optional information about the context in which a requested coordinate operation will be used.
  The context can provide information such as:

  <ul>
    <li>The geographic area where the transformation will be used.</li>
    <li>The desired accuracy. A coarser accuracy may allow SIS to choose a faster transformation method.</li>
  </ul>

  While optional, those information can help <a href="DefaultCoordinateOperationFactory.html" title="class in org.apache.sis.referencing.operation"><code>DefaultCoordinateOperationFactory</code></a>
  to choose the most suitable coordinate transformation between two CRS.

  <div class="note"><b>Example:</b>
  if a transformation from NAD27 to WGS84 is requested without providing context, then Apache SIS will return the
  transformation applicable to the widest North American surface. But if the user provides a context saying that
  he wants to transform coordinates in Texas, then Apache SIS may return another coordinate transformation with
  different <a href="../datum/BursaWolfParameters.html" title="class in org.apache.sis.referencing.datum">Bursa-Wolf parameters</a> more suitable
  to Texas, but not suitable to the rest of North-America.
  </div>

  <code>CoordinateOperationContext</code> is part of the API used by SIS for implementing the <cite>late binding</cite>
  model. See <a href="package-summary.html">package javadoc</a> for a note on early binding versus
  late binding implementations.</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.CoordinateOperationContext">Serialized Form</a></dd>

 <p><font size="-1">Defined in the <code>sis-referencing</code> module</font></p>
 <dt><span class="simpleTagLabel">TODO:</span></dt>
 <dd>Should also take the country of a <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Locale.html?is-external=true" title="class or interface in java.util" class="externalLink"><code>Locale</code></a>. The EPSG database contains ISO2 and ISO3
        identifiers that we can use.</dd>
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 <th class="colFirst" scope="col">Constructor</th>
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 <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">CoordinateOperationContext</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Creates a new context with no area of interest and the best accuracy available.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.opengis.metadata.extent.Extent,double)">CoordinateOperationContext</a></span>&#8203;(<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;area,
                           double&nbsp;accuracy)</code></th>
 <td class="colLast">
 <div class="block">Creates a new context with the given area of interest and desired accuracy.</div>
 </td>
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 <td class="colFirst"><code>static <a href="CoordinateOperationContext.html" title="class in org.apache.sis.referencing.operation">CoordinateOperationContext</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#fromBoundingBox(org.opengis.metadata.extent.GeographicBoundingBox)">fromBoundingBox</a></span>&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/extent/GeographicBoundingBox.html?is-external=true" title="class or interface in org.opengis.metadata.extent" class="externalLink">GeographicBoundingBox</a>&nbsp;areaOfInterest)</code></th>
 <td class="colLast">
 <div class="block">Creates an operation context for the given area of interest, which may be null or
  <a href="../../metadata/iso/extent/DefaultGeographicBoundingBox.html#isEmpty()"><code>undefined</code></a>.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code><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></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getAreaOfInterest()">getAreaOfInterest</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the spatiotemporal area of interest, or <code>null</code> if none.</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="#getDesiredAccuracy()">getDesiredAccuracy</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the desired accuracy in metres.</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setAreaOfInterest(org.opengis.metadata.extent.Extent)">setAreaOfInterest</a></span>&#8203;(<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;area)</code></th>
 <td class="colLast">
 <div class="block">Sets the spatiotemporal area of interest, or <code>null</code> if none.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setAreaOfInterest(org.opengis.metadata.extent.GeographicBoundingBox)">setAreaOfInterest</a></span>&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/extent/GeographicBoundingBox.html?is-external=true" title="class or interface in org.opengis.metadata.extent" class="externalLink">GeographicBoundingBox</a>&nbsp;area)</code></th>
 <td class="colLast">
 <div class="block">Sets the geographic component of the area of interest, or <code>null</code> if none.</div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setDesiredAccuracy(double)">setDesiredAccuracy</a></span>&#8203;(double&nbsp;accuracy)</code></th>
 <td class="colLast">
 <div class="block">Sets the desired accuracy in metres.</div>
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 <h4>CoordinateOperationContext</h4>
 <pre>public&nbsp;CoordinateOperationContext()</pre>
 <div class="block">Creates a new context with no area of interest and the best accuracy available.</div>
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 <h4>CoordinateOperationContext</h4>
 <pre>public&nbsp;CoordinateOperationContext&#8203;(<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;area,
                                   double&nbsp;accuracy)</pre>
 <div class="block">Creates a new context with the given area of interest and desired accuracy.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>area</code> - the area of interest, or <code>null</code> if none.</dd>
 <dd><code>accuracy</code> - the desired accuracy in metres, or 0 for the best accuracy available.
  See <a href="#getDesiredAccuracy()"><code>getDesiredAccuracy()</code></a> for more details about what we mean by <cite>"best accuracy"</cite>.</dd>
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 <h4>fromBoundingBox</h4>
 <pre class="methodSignature">public static&nbsp;<a href="CoordinateOperationContext.html" title="class in org.apache.sis.referencing.operation">CoordinateOperationContext</a>&nbsp;fromBoundingBox&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/extent/GeographicBoundingBox.html?is-external=true" title="class or interface in org.opengis.metadata.extent" class="externalLink">GeographicBoundingBox</a>&nbsp;areaOfInterest)</pre>
 <div class="block">Creates an operation context for the given area of interest, which may be null or
  <a href="../../metadata/iso/extent/DefaultGeographicBoundingBox.html#isEmpty()"><code>undefined</code></a>.
  This is a convenience method for a frequently-used operation.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>areaOfInterest</code> - the area of interest, or <code>null</code> if none.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the operation context, or <code>null</code> if the given bounding box was null, undefined
          or covers the whole world (in which case Apache SIS does not need that we specify a context).</dd>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>1.0</dd>
 </dl>
 </li>
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 <pre class="methodSignature">public&nbsp;<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;getAreaOfInterest()</pre>
 <div class="block">Returns the spatiotemporal area of interest, or <code>null</code> if none.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the spatiotemporal area of interest, or <code>null</code> if none.</dd>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="../../metadata/iso/extent/Extents.html#getGeographicBoundingBox(org.opengis.metadata.extent.Extent)"><code>Extents.getGeographicBoundingBox(Extent)</code></a></dd>
 </dl>
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 <pre class="methodSignature">public&nbsp;void&nbsp;setAreaOfInterest&#8203;(<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;area)</pre>
 <div class="block">Sets the spatiotemporal area of interest, or <code>null</code> if none.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>area</code> - the spatiotemporal area of interest, or <code>null</code> if none.</dd>
 </dl>
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 <h4>setAreaOfInterest</h4>
 <pre class="methodSignature">public&nbsp;void&nbsp;setAreaOfInterest&#8203;(<a href="http://www.geoapi.org/3.0/javadoc/org/opengis/metadata/extent/GeographicBoundingBox.html?is-external=true" title="class or interface in org.opengis.metadata.extent" class="externalLink">GeographicBoundingBox</a>&nbsp;area)</pre>
 <div class="block">Sets the geographic component of the area of interest, or <code>null</code> if none.
  This convenience method set the bounding box into the spatiotemporal <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"><code>Extent</code></a>.

  <p>The reverse operation can be done with <code><a href="../../metadata/iso/extent/Extents.html#getGeographicBoundingBox(org.opengis.metadata.extent.Extent)">Extents.getGeographicBoundingBox</a>(<a href="#getAreaOfInterest()">getAreaOfInterest()</a>)</code>.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>area</code> - the geographic area of interest, or <code>null</code> if none.</dd>
 </dl>
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 <pre class="methodSignature">public&nbsp;double&nbsp;getDesiredAccuracy()</pre>
 <div class="block">Returns the desired accuracy in metres.
  A value of 0 means to search for the most accurate operation.

  <p>When searching for the most accurate operation, SIS considers only the operations specified by the authority.
  For example the <cite>Molodensky</cite> method is a better datum shift approximation than <cite>Abridged Molodensky</cite>.
  But if all coordinate operations defined by the authority use the Abridged Molodensky method, then SIS will ignore
  the Molodensky one.</p></div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the desired accuracy in metres.</dd>
 </dl>
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 <pre class="methodSignature">public&nbsp;void&nbsp;setDesiredAccuracy&#8203;(double&nbsp;accuracy)</pre>
 <div class="block">Sets the desired accuracy in metres.
  A value of 0 means to search for the most accurate operation.
  See <a href="#getDesiredAccuracy()"><code>getDesiredAccuracy()</code></a> for more details about what we mean by <cite>"most accurate"</cite>.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>accuracy</code> - the desired accuracy in metres.</dd>
 </dl>
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