histogram.html

Geotools是一个开源的Java GIS工具包,可利用它来开发符合标准的地理信息系统。Geotools提供了OGC(Open Geospatial Consortium)规范的一个实现来作为他们的

<A NAME="GT_SYNTHETIC_PROPERTY_HISTOGRAM"><!-- --></A><H3>
GT_SYNTHETIC_PROPERTY_HISTOGRAM</H3>
<PRE>
public static final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>GT_SYNTHETIC_PROPERTY_HISTOGRAM</B></PRE>
<DL>
<DD><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang"><CODE>String</CODE></A> key for getting the <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/Histogram.html" title="class or interface in javax.media.jai"><CODE>Histogram</CODE></A> object.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#org.geotools.coverage.processing.operation.Histogram.GT_SYNTHETIC_PROPERTY_HISTOGRAM">Constant Field Values</A></DL>
</DL>

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<A NAME="Histogram()"><!-- --></A><H3>
Histogram</H3>
<PRE>
public <B>Histogram</B>()
          throws OperationNotFoundException</PRE>
<DL>
<DD>Default constructor for the <A HREF="../../../../../org/geotools/coverage/processing/operation/Histogram.html" title="class in org.geotools.coverage.processing.operation"><CODE>Histogram</CODE></A> geotools operation.
<P>

<DT><B>Throws:</B>
<DD><CODE>OperationNotFoundException</CODE></DL>

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<A NAME="computeOnGeophysicsValues(org.opengis.parameter.ParameterValueGroup)"><!-- --></A><H3>
computeOnGeophysicsValues</H3>
<PRE>
protected boolean <B>computeOnGeophysicsValues</B>(ParameterValueGroup&nbsp;parameters)</PRE>
<DL>
<DD>This operation MUST be performed on the geophysics data for this
 <A HREF="../../../../../org/geotools/coverage/grid/GridCoverage2D.html" title="class in org.geotools.coverage.grid"><CODE>GridCoverage2D</CODE></A>.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../../org/geotools/coverage/processing/OperationJAI.html#computeOnGeophysicsValues(org.opengis.parameter.ParameterValueGroup)">computeOnGeophysicsValues</A></CODE> in class <CODE><A HREF="../../../../../org/geotools/coverage/processing/OperationJAI.html" title="class in org.geotools.coverage.processing">OperationJAI</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>parameters</CODE> - <CODE>ParameterValueGroup</CODE> that describes this operation
<DT><B>Returns:</B><DD>always true.<DT><B>See Also:</B><DD><A HREF="../../../../../org/geotools/coverage/grid/GridCoverage2D.html#geophysics(boolean)"><CODE>GridCoverage2D.geophysics(boolean)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getProperties(java.awt.image.RenderedImage, org.opengis.referencing.crs.CoordinateReferenceSystem, org.opengis.util.InternationalString, org.opengis.referencing.operation.MathTransform, org.geotools.coverage.grid.GridCoverage2D[], org.geotools.coverage.processing.OperationJAI.Parameters)"><!-- --></A><H3>
getProperties</H3>
<PRE>
protected <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Map.html" title="class or interface in java.util">Map</A> <B>getProperties</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/RenderedImage.html" title="class or interface in java.awt.image">RenderedImage</A>&nbsp;data,
                            CoordinateReferenceSystem&nbsp;crs,
                            InternationalString&nbsp;name,
                            MathTransform&nbsp;toCRS,
                            <A HREF="../../../../../org/geotools/coverage/grid/GridCoverage2D.html" title="class in org.geotools.coverage.grid">GridCoverage2D</A>[]&nbsp;sources,
                            <A HREF="../../../../../org/geotools/coverage/processing/OperationJAI.Parameters.html" title="class in org.geotools.coverage.processing">OperationJAI.Parameters</A>&nbsp;parameters)</PRE>
<DL>
<DD>Prepare the <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/Histogram.html" title="class or interface in javax.media.jai"><CODE>Histogram</CODE></A> property for this extream operation.
 
 <p>
 See <a
 href="http://download.java.net/media/jai/javadoc/1.1.3/jai-apidocs/javax/media/jai/operator/ExtremaDescriptor.html">ExtremaDescriptor</a>
 for more info.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../../org/geotools/coverage/processing/OperationJAI.html#getProperties(java.awt.image.RenderedImage, org.opengis.referencing.crs.CoordinateReferenceSystem, org.opengis.util.InternationalString, org.opengis.referencing.operation.MathTransform, org.geotools.coverage.grid.GridCoverage2D[], org.geotools.coverage.processing.OperationJAI.Parameters)">getProperties</A></CODE> in class <CODE><A HREF="../../../../../org/geotools/coverage/processing/OperationJAI.html" title="class in org.geotools.coverage.processing">OperationJAI</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - should be a <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/RenderedOp.html" title="class or interface in javax.media.jai"><CODE>RenderedOp</CODE></A> which is the results of an <CODE>Operation</CODE>.<DD><CODE>crs</CODE> - is the <CODE>CoordinateReferenceSystem</CODE>  for the result.<DD><CODE>name</CODE> - <DD><CODE>toCRS</CODE> - <DD><CODE>sources</CODE> - for this <CODE>Operation</CODE>.<DD><CODE>parameters</CODE> - that controled this <CODE>Operation</CODE>.
<DT><B>Returns:</B><DD>the created properties to put in the returned <A HREF="../../../../../org/geotools/coverage/grid/GridCoverage2D.html" title="class in org.geotools.coverage.grid"><CODE>GridCoverage2D</CODE></A>.<DT><B>See Also:</B><DD><CODE>OperationJAI#getProperties(RenderedImage, CoordinateReferenceSystem,
      InternationalString, MathTransform, GridCoverage2D[],
      org.geotools.coverage.processing.OperationJAI.Parameters),</CODE></DL>
</DD>
</DL>
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