static/apidocs/org/apache/sis/referencing/operation/projection/NormalizedProjection.ParameterRole.html - sis-site - Git at Google

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 <h2 title="Enum NormalizedProjection.ParameterRole" class="title">Enum NormalizedProjection.ParameterRole</h2>
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 <dd><a href="NormalizedProjection.html" title="class in org.apache.sis.referencing.operation.projection">NormalizedProjection</a></dd>
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 <pre>protected static enum <span class="typeNameLabel">NormalizedProjection.ParameterRole</span>
 extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang" class="externalLink">Enum</a>&lt;<a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a>&gt;</pre>
 <div class="block">Maps the parameters to be used for initializing <a href="NormalizedProjection.html" title="class in org.apache.sis.referencing.operation.projection"><code>NormalizedProjection</code></a> and its
  <a href="../transform/ContextualParameters.html#getMatrix(org.apache.sis.referencing.operation.transform.ContextualParameters.MatrixRole)">normalization / denormalization</a> matrices.
  This is an enumeration of parameters found in almost every map projections, but under different names.
  This enumeration allows <code>NormalizedProjection</code> subclasses to specify which parameter names, ranges
  and default values should be used by the
  <a href="NormalizedProjection.html#%3Cinit%3E(org.opengis.referencing.operation.OperationMethod,org.apache.sis.parameter.Parameters,java.util.Map)">projection constructor</a>.

  <p><code>NormalizedProjection</code> subclasses will typically provide values only for the following keys:
  <a href="#CENTRAL_MERIDIAN"><code>CENTRAL_MERIDIAN</code></a>, <a href="#SCALE_FACTOR"><code>SCALE_FACTOR</code></a>, <a href="#FALSE_EASTING"><code>FALSE_EASTING</code></a> and <a href="#FALSE_NORTHING"><code>FALSE_NORTHING</code></a>.</p></div>
 <dl>
 <dt><span class="simpleTagLabel">Since:</span></dt>
 <dd>0.6</dd>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="NormalizedProjection.html#%3Cinit%3E(org.opengis.referencing.operation.OperationMethod,org.apache.sis.parameter.Parameters,java.util.Map)"><code>NormalizedProjection(OperationMethod, Parameters, Map)</code></a></dd>

 <p><font size="-1">Defined in the <code>sis-referencing</code> module</font></p>
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 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CENTRAL_MERIDIAN">CENTRAL_MERIDIAN</a></span></code></th>
 <td class="colLast">
 <div class="block">Maps the <cite>central meridian</cite> parameter (symbol: λ₀).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#FALSE_EASTING">FALSE_EASTING</a></span></code></th>
 <td class="colLast">
 <div class="block">Maps the <cite>false easting</cite> parameter (symbol: <var>FE</var>).</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#FALSE_NORTHING">FALSE_NORTHING</a></span></code></th>
 <td class="colLast">
 <div class="block">Maps the <cite>false northing</cite> parameter (symbol: <var>FN</var>).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#FALSE_SOUTHING">FALSE_SOUTHING</a></span></code></th>
 <td class="colLast">
 <div class="block">Maps the <cite>false southing</cite> parameter (symbol: <var>FS</var>).</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#FALSE_WESTING">FALSE_WESTING</a></span></code></th>
 <td class="colLast">
 <div class="block">Maps the <cite>false westing</cite> parameter (symbol: <var>FW</var>).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LATITUDE_OF_CONFORMAL_SPHERE_RADIUS">LATITUDE_OF_CONFORMAL_SPHERE_RADIUS</a></span></code></th>
 <td class="colLast">
 <div class="block">Maps the parameter for the latitude where to compute the <cite>radius of conformal sphere</cite>
  (symbol: <var>R</var><sub>c</sub>).</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SCALE_FACTOR">SCALE_FACTOR</a></span></code></th>
 <td class="colLast">
 <div class="block">Maps the <cite>scale factor</cite> parameter (symbol: <var>k₀</var>).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SEMI_MAJOR">SEMI_MAJOR</a></span></code></th>
 <td class="colLast">
 <div class="block">Maps the <cite>semi-major axis length</cite> parameter (symbol: <var>a</var>).</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SEMI_MINOR">SEMI_MINOR</a></span></code></th>
 <td class="colLast">
 <div class="block">Maps the <cite>semi-minor axis length</cite> parameter (symbol: <var>b</var>).</div>
 </td>
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 <td class="colFirst"><code>static <a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#valueOf(java.lang.String)">valueOf</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;name)</code></th>
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 <td class="colFirst"><code>static <a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a>[]</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#values()">values</a></span>()</code></th>
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 <pre>public static final&nbsp;<a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a> SEMI_MAJOR</pre>
 <div class="block">Maps the <cite>semi-major axis length</cite> parameter (symbol: <var>a</var>).
  This value is used for computing <a href="NormalizedProjection.html#eccentricity"><code>NormalizedProjection.eccentricity</code></a>,
  and is also a multiplication factor for the denormalization matrix.

  <p>Unless specified otherwise, this is always mapped to a parameter named <code>"semi_major"</code>.
  <code>NormalizedProjection</code> subclasses typically do not need to provide a value for this key.</p></div>
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 <h4>SEMI_MINOR</h4>
 <pre>public static final&nbsp;<a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a> SEMI_MINOR</pre>
 <div class="block">Maps the <cite>semi-minor axis length</cite> parameter (symbol: <var>b</var>).
  This value is used for computing <a href="NormalizedProjection.html#eccentricity"><code>NormalizedProjection.eccentricity</code></a>.

  <p>Unless specified otherwise, this is always mapped to a parameter named <code>"semi_minor"</code>.
  <code>NormalizedProjection</code> subclasses typically do not need to provide a value for this key.</p></div>
 </li>
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 <h4>LATITUDE_OF_CONFORMAL_SPHERE_RADIUS</h4>
 <pre>public static final&nbsp;<a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a> LATITUDE_OF_CONFORMAL_SPHERE_RADIUS</pre>
 <div class="block">Maps the parameter for the latitude where to compute the <cite>radius of conformal sphere</cite>
  (symbol: <var>R</var><sub>c</sub>). If this parameter is provided, then the radius of the conformal
  sphere at latitude φ will be used instead than the semi-major axis length in the denormalisation matrix.
  In other words, if provided then <var>a</var> is replaced by <var>R</var><sub>c</sub> below:

  <div style="text-align:center">    <math display="block" alttext="MathML capable browser required">
       <mfenced open="[" close="]">
         <mtable>
           <mtr>
             <mtd><mi>a</mi> <mo>⋅</mo> <msub><mi>k</mi><mn>0</mn></msub></mtd>
             <mtd><mn>0</mn></mtd>
             <mtd><mi>FE</mi></mtd>
           </mtr>
           <mtr>
             <mtd><mn>0</mn></mtd>
             <mtd><mi>a</mi> <mo>⋅</mo> <msub><mi>k</mi><mn>0</mn></msub></mtd>
             <mtd><mi>FN</mi></mtd>
           </mtr>
           <mtr>
             <mtd><mn>0</mn></mtd>
             <mtd><mn>0</mn></mtd>
             <mtd><mn>1</mn></mtd>
           </mtr>
         </mtable>
       </mfenced>
     </math>
 </div>

  <p>This enumeration shall be used <strong>only</strong> when the user requested explicitly spherical
  formulas, for example the <cite>"Mercator (Spherical)"</cite> projection (EPSG:1026), but the figure
  of the Earth may be an ellipsoid rather than a sphere. In the majority of cases, this enumeration should
  not be used.</p></div>
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 <pre>public static final&nbsp;<a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a> CENTRAL_MERIDIAN</pre>
 <div class="block">Maps the <cite>central meridian</cite> parameter (symbol: λ₀).
  This value is subtracted from the longitude values before the map projections.

  <p>Some common names for this parameter are:</p>
  <ul>
    <li>Longitude of origin</li>
    <li>Longitude of false origin</li>
    <li>Longitude of natural origin</li>
    <li>Spherical longitude of origin</li>
    <li>Longitude of projection centre</li>
  </ul></div>
 </li>
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 <h4>SCALE_FACTOR</h4>
 <pre>public static final&nbsp;<a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a> SCALE_FACTOR</pre>
 <div class="block">Maps the <cite>scale factor</cite> parameter (symbol: <var>k₀</var>).
  This is a multiplication factor for the (<var>x</var>,<var>y</var>) values obtained after map projections.

  <p>Some common names for this parameter are:</p>
  <ul>
    <li>Scale factor at natural origin</li>
    <li>Scale factor on initial line</li>
    <li>Scale factor on pseudo standard parallel</li>
  </ul></div>
 </li>
 </ul>
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 <h4>FALSE_EASTING</h4>
 <pre>public static final&nbsp;<a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a> FALSE_EASTING</pre>
 <div class="block">Maps the <cite>false easting</cite> parameter (symbol: <var>FE</var>).
  This is a translation term for the <var>x</var> values obtained after map projections.

  <p>Some common names for this parameter are:</p>
  <ul>
    <li>False easting</li>
    <li>Easting at false origin</li>
    <li>Easting at projection centre</li>
  </ul></div>
 </li>
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 <h4>FALSE_WESTING</h4>
 <pre>public static final&nbsp;<a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a> FALSE_WESTING</pre>
 <div class="block">Maps the <cite>false westing</cite> parameter (symbol: <var>FW</var>).
  This is the same <var>x</var> translation than <a href="#FALSE_EASTING"><code>FALSE_EASTING</code></a>, but of opposite sign.

  <p>Actually, there is usually no parameter named "false westing" in a map projection.
  But some projections like <cite>"Lambert Conic Conformal (West Orientated)"</cite> are
  defined in such a way that their "false easting" parameter is effectively a "false westing".
  This enumeration value can be used for informing <a href="NormalizedProjection.html" title="class in org.apache.sis.referencing.operation.projection"><code>NormalizedProjection</code></a> about that fact.</p></div>
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 <h4>FALSE_NORTHING</h4>
 <pre>public static final&nbsp;<a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a> FALSE_NORTHING</pre>
 <div class="block">Maps the <cite>false northing</cite> parameter (symbol: <var>FN</var>).
  This is a translation term for the <var>y</var> values obtained after map projections.

  <p>Some common names for this parameter are:</p>
  <ul>
    <li>False northing</li>
    <li>Northing at false origin</li>
    <li>Northing at projection centre</li>
  </ul></div>
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 <h4>FALSE_SOUTHING</h4>
 <pre>public static final&nbsp;<a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a> FALSE_SOUTHING</pre>
 <div class="block">Maps the <cite>false southing</cite> parameter (symbol: <var>FS</var>).
  This is the same <var>y</var> translation than <a href="#FALSE_NORTHING"><code>FALSE_NORTHING</code></a>, but of opposite sign.

  <p>Actually, there is usually no parameter named "false southing" in a map projection.
  But some projections like <cite>"Transverse Mercator (South Orientated)"</cite> are
  defined in such a way that their "false northing" parameter is effectively a "false southing".
  This enumeration value can be used for informing <a href="NormalizedProjection.html" title="class in org.apache.sis.referencing.operation.projection"><code>NormalizedProjection</code></a> about that fact.</p></div>
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 <h4>values</h4>
 <pre class="methodSignature">public static&nbsp;<a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a>[]&nbsp;values()</pre>
 <div class="block">Returns an array containing the constants of this enum type, in
 the order they are declared. This method may be used to iterate
 over the constants as follows:
 <pre>
 for (NormalizedProjection.ParameterRole c : NormalizedProjection.ParameterRole.values())
 &nbsp;   System.out.println(c);
 </pre></div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>an array containing the constants of this enum type, in the order they are declared</dd>
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 <pre class="methodSignature">public static&nbsp;<a href="NormalizedProjection.ParameterRole.html" title="enum in org.apache.sis.referencing.operation.projection">NormalizedProjection.ParameterRole</a>&nbsp;valueOf&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;name)</pre>
 <div class="block">Returns the enum constant of this type with the specified name.
 The string must match <i>exactly</i> an identifier used to declare an
 enum constant in this type.  (Extraneous whitespace characters are
 not permitted.)</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>name</code> - the name of the enum constant to be returned.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the enum constant with the specified name</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink">IllegalArgumentException</a></code> - if this enum type has no constant with the specified name</dd>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang" class="externalLink">NullPointerException</a></code> - if the argument is null</dd>
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