nodatafilter.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 HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>
  <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html" title="class or interface in javax.media.jai">PlanarImage</A>
      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/OpImage.html" title="class or interface in javax.media.jai">OpImage</A>
          <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/AreaOpImage.html" title="class or interface in javax.media.jai">AreaOpImage</A>
              <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><B>NodataFilter</B>
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<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/ImageJAI.html" title="class or interface in javax.media.jai">ImageJAI</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PropertyChangeEmitter.html" title="class or interface in javax.media.jai">PropertyChangeEmitter</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PropertySource.html" title="class or interface in javax.media.jai">PropertySource</A>, <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>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/WritablePropertySource.html" title="class or interface in javax.media.jai">WritablePropertySource</A></DD>
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<DT>public class <B>NodataFilter</B><DT>extends <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/AreaOpImage.html" title="class or interface in javax.media.jai">AreaOpImage</A></DL>

<P>
Replaces <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Double.html#NaN" title="class or interface in java.lang"><CODE>Double.NaN</CODE></A> values by the weighted average of neighbors values.
 This operation use a box of &times pixels centered on
 each  value. The weighted average is then computed, ignoring all
  values. If the number of valid values is greater than
 , then the center  is replaced
 by the computed average. Otherwise, the  value is left unchanged.
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<DL>
<DT><B>Since:</B></DT>
  <DD>2.1</DD>
<DT><B>Author:</B></DT>
  <DD>Lionel Flahaut, Martin Desruisseaux</DD>

<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/image/jai/NodataFilter.java">SVN head</A>)</DD>
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<!-- =========== FIELD SUMMARY =========== -->

<A NAME="field_summary"><!-- --></A>
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<TD COLSPAN=2><FONT SIZE="+2">
<B>Field Summary</B></FONT></TD>
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&nbsp;<A NAME="fields_inherited_from_class_AreaOpImage"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TD><B>Fields inherited from class <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/AreaOpImage.html" title="class or interface in javax.media.jai">AreaOpImage</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/AreaOpImage.html#bottomPadding" title="class or interface in javax.media.jai">bottomPadding</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/AreaOpImage.html#extender" title="class or interface in javax.media.jai">extender</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/AreaOpImage.html#leftPadding" title="class or interface in javax.media.jai">leftPadding</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/AreaOpImage.html#rightPadding" title="class or interface in javax.media.jai">rightPadding</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/AreaOpImage.html#topPadding" title="class or interface in javax.media.jai">topPadding</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="fields_inherited_from_class_OpImage"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Fields inherited from class <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/OpImage.html" title="class or interface in javax.media.jai">OpImage</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/OpImage.html#cache" title="class or interface in javax.media.jai">cache</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/OpImage.html#cobbleSources" title="class or interface in javax.media.jai">cobbleSources</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/OpImage.html#OP_COMPUTE_BOUND" title="class or interface in javax.media.jai">OP_COMPUTE_BOUND</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/OpImage.html#OP_IO_BOUND" title="class or interface in javax.media.jai">OP_IO_BOUND</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/OpImage.html#OP_NETWORK_BOUND" title="class or interface in javax.media.jai">OP_NETWORK_BOUND</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/OpImage.html#tileCacheMetric" title="class or interface in javax.media.jai">tileCacheMetric</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/OpImage.html#tileRecycler" title="class or interface in javax.media.jai">tileRecycler</A></CODE></TD>
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&nbsp;<A NAME="fields_inherited_from_class_PlanarImage"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Fields inherited from class <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html" title="class or interface in javax.media.jai">PlanarImage</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html#colorModel" title="class or interface in javax.media.jai">colorModel</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html#eventManager" title="class or interface in javax.media.jai">eventManager</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html#height" title="class or interface in javax.media.jai">height</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html#minX" title="class or interface in javax.media.jai">minX</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html#minY" title="class or interface in javax.media.jai">minY</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html#properties" title="class or interface in javax.media.jai">properties</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html#sampleModel" title="class or interface in javax.media.jai">sampleModel</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html#tileFactory" title="class or interface in javax.media.jai">tileFactory</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html#tileGridXOffset" title="class or interface in javax.media.jai">tileGridXOffset</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html#tileGridYOffset" title="class or interface in javax.media.jai">tileGridYOffset</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html#tileHeight" title="class or interface in javax.media.jai">tileHeight</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html#tileWidth" title="class or interface in javax.media.jai">tileWidth</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PlanarImage.html#width" title="class or interface in javax.media.jai">width</A></CODE></TD>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->

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<B>Constructor Summary</B></FONT></TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected </CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/image/jai/NodataFilter.html#NodataFilter(java.awt.image.RenderedImage, javax.media.jai.ImageLayout, java.util.Map, int, int)">NodataFilter</A></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;source,
             <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/ImageLayout.html" title="class or interface in javax.media.jai">ImageLayout</A>&nbsp;layout,
             <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Map.html" title="class or interface in java.util">Map</A>&nbsp;map,
             int&nbsp;padding,