operationjai.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

  <DD>2.2</DD>
<DT><B>Author:</B></DT>
  <DD>Martin Desruisseaux, Simone Giannecchini</DD>
<DT><B>See Also:</B><DD><A HREF="../../../../serialized-form.html#org.geotools.coverage.processing.OperationJAI">Serialized Form</A>
<DT><B>Module:</B></DT>
<DD><CODE><B>module/coverage</B></CODE> &nbsp; (<A HREF="http://maven.geotools.fr/repository/org/geotools/gt2-coverage/"><CODE>gt2-coverage.jar</CODE></A>) (<A HREF="http://maven.geotools.fr/reports/coverage/index.html">Maven report</A>) (<A HREF="http://svn.geotools.org/geotools/tags/2.3.2/module/coverage/src/org/geotools/coverage/processing/OperationJAI.java">SVN head</A>)</DD>
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<CODE>protected static&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/OperationJAI.Parameters.html" title="class in org.geotools.coverage.processing">OperationJAI.Parameters</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A block of parameters for a <A HREF="../../../../org/geotools/coverage/grid/GridCoverage2D.html" title="class in org.geotools.coverage.grid"><CODE>GridCoverage2D</CODE></A> processed by a <A HREF="../../../../org/geotools/coverage/processing/OperationJAI.html" title="class in org.geotools.coverage.processing"><CODE>OperationJAI</CODE></A>.
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<CODE>protected &nbsp;<A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/OperationDescriptor.html" title="class or interface in javax.media.jai">OperationDescriptor</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/OperationJAI.html#operation">operation</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The JAI's operation descriptor.</TD>
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<TD><B>Fields inherited from class <A HREF="../../../../org/geotools/coverage/processing/Operation2D.html" title="class in org.geotools.coverage.processing">Operation2D</A></B></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../org/geotools/coverage/processing/Operation2D.html#SOURCE_0">SOURCE_0</A></CODE></TD>
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<TD><B>Fields inherited from class <A HREF="../../../../org/geotools/coverage/processing/AbstractOperation.html" title="class in org.geotools.coverage.processing">AbstractOperation</A></B></TD>
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<TD><CODE><A HREF="../../../../org/geotools/coverage/processing/AbstractOperation.html#descriptor">descriptor</A></CODE></TD>
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<CODE>&nbsp;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/OperationJAI.html#OperationJAI(javax.media.jai.OperationDescriptor)">OperationJAI</A></B>(<A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/OperationDescriptor.html" title="class or interface in javax.media.jai">OperationDescriptor</A>&nbsp;operation)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructs a grid coverage operation backed by a JAI operation. </TD>
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<CODE>protected </CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/OperationJAI.html#OperationJAI(javax.media.jai.OperationDescriptor, org.opengis.parameter.ParameterDescriptorGroup)">OperationJAI</A></B>(<A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/OperationDescriptor.html" title="class or interface in javax.media.jai">OperationDescriptor</A>&nbsp;operation,
             ParameterDescriptorGroup&nbsp;descriptor)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructs a grid coverage operation backed by a JAI operation. </TD>
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<CODE>&nbsp;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/OperationJAI.html#OperationJAI(java.lang.String)">OperationJAI</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;operation)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructs a grid coverage operation from a JAI operation name. </TD>
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<!-- ========== METHOD SUMMARY =========== -->

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<CODE>protected &nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/OperationJAI.html#computeOnGeophysicsValues(org.opengis.parameter.ParameterValueGroup)">computeOnGeophysicsValues</A></B>(ParameterValueGroup&nbsp;parameters)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns  if grid coverage content should be converted from sample values
 to geophysics value before to apply an operation. </TD>
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<CODE>protected &nbsp;<A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/ParameterBlockJAI.html" title="class or interface in javax.media.jai">ParameterBlockJAI</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/OperationJAI.html#copyParameters(org.opengis.parameter.ParameterValueGroup)">copyParameters</A></B>(ParameterValueGroup&nbsp;parameters)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Copies parameter values from the ParameterValues object to the
 ParameterBlockJAI, except the sources. </TD>
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<CODE>protected &nbsp;<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></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/OperationJAI.html#createRenderedImage(javax.media.jai.ParameterBlockJAI, java.awt.RenderingHints)">createRenderedImage</A></B>(<A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/ParameterBlockJAI.html" title="class or interface in javax.media.jai">ParameterBlockJAI</A>&nbsp;parameters,
                    <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/RenderingHints.html" title="class or interface in java.awt">RenderingHints</A>&nbsp;hints)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Applies the JAI operation. </TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;<A HREF="../../../../org/geotools/coverage/Category.html" title="class in org.geotools.coverage">Category</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/OperationJAI.html#deriveCategory(org.geotools.coverage.Category[], org.geotools.coverage.processing.OperationJAI.Parameters)">deriveCategory</A></B>(<A HREF="../../../../org/geotools/coverage/Category.html" title="class in org.geotools.coverage">Category</A>[]&nbsp;categories,
               <A HREF="../../../../org/geotools/coverage/processing/OperationJAI.Parameters.html" title="class in org.geotools.coverage.processing">OperationJAI.Parameters</A>&nbsp;parameters)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the quantitative category for a single <A HREF="../../../../org/geotools/coverage/GridSampleDimension.html" title="class in org.geotools.coverage">sample dimension</A>
 in the target <A HREF="../../../../org/geotools/coverage/grid/GridCoverage2D.html" title="class in org.geotools.coverage.grid">grid coverage</A>. </TD>
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<CODE>protected &nbsp;<A HREF="../../../../org/geotools/coverage/grid/GridCoverage2D.html" title="class in org.geotools.coverage.grid">GridCoverage2D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/OperationJAI.html#deriveGridCoverage(org.geotools.coverage.grid.GridCoverage2D[], org.geotools.coverage.processing.OperationJAI.Parameters)">deriveGridCoverage</A></B>(<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)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Applies a JAI operation to a grid coverage. </TD>
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<CODE>protected &nbsp;InternationalString</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/OperationJAI.html#deriveName(org.geotools.coverage.grid.GridCoverage2D[], int, org.geotools.coverage.processing.OperationJAI.Parameters)">deriveName</A></B>(<A HREF="../../../../org/geotools/coverage/grid/GridCoverage2D.html" title="class in org.geotools.coverage.grid">GridCoverage2D</A>[]&nbsp;sources,