operations.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

<CODE>&nbsp;GridCoverage</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/Operations.html#SubsampleAverage(org.opengis.coverage.grid.GridCoverage, double, double, javax.media.jai.Interpolation, javax.media.jai.BorderExtender)">SubsampleAverage</A></B>(GridCoverage&nbsp;source,
                 double&nbsp;scaleX,
                 double&nbsp;scaleY,
                 <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/Interpolation.html" title="class or interface in javax.media.jai">Interpolation</A>&nbsp;interpolation,
                 <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/BorderExtender.html" title="class or interface in javax.media.jai">BorderExtender</A>&nbsp;be)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>Renamed as <A HREF="../../../../org/geotools/coverage/processing/Operations.html#subsampleAverage(org.opengis.coverage.grid.GridCoverage, double, double, javax.media.jai.Interpolation, javax.media.jai.BorderExtender)"><CODE>subsampleAverage</CODE></A> (lower case "s").</I></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;Coverage</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/Operations.html#subtract(org.opengis.coverage.Coverage, double[])">subtract</A></B>(Coverage&nbsp;source,
         double[]&nbsp;constants)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subtracts constants (one for each band) from every sample values of the source coverage.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;Coverage</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/coverage/processing/Operations.html#subtractFrom(org.opengis.coverage.Coverage, double[])">subtractFrom</A></B>(Coverage&nbsp;source,
             double[]&nbsp;constants)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subtracts every sample values of the source coverage from constants (one for each band).</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
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<P>

<!-- ============ FIELD DETAIL =========== -->

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<TD COLSPAN=1><FONT SIZE="+2">
<B>Field Detail</B></FONT></TD>
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</TABLE>

<A NAME="DEFAULT"><!-- --></A><H3>
DEFAULT</H3>
<PRE>
public static final <A HREF="../../../../org/geotools/coverage/processing/Operations.html" title="class in org.geotools.coverage.processing">Operations</A> <B>DEFAULT</B></PRE>
<DL>
<DD>The default instance.
<P>
<DL>
</DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

<A NAME="constructor_detail"><!-- --></A>
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<TD COLSPAN=1><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="Operations(java.awt.RenderingHints)"><!-- --></A><H3>
Operations</H3>
<PRE>
public <B>Operations</B>(<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)</PRE>
<DL>
<DD>Creates a new instance using the specified hints.
<P>
<DT><B>Parameters:</B><DD><CODE>hints</CODE> - The hints, or  if none.</DL>

<!-- ============ METHOD DETAIL ========== -->

<A NAME="method_detail"><!-- --></A>
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
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<A NAME="add(org.opengis.coverage.Coverage, double[])"><!-- --></A><H3>
add</H3>
<PRE>
public Coverage <B>add</B>(Coverage&nbsp;source,
                    double[]&nbsp;constants)
                                  throws <A HREF="../../../../org/geotools/coverage/processing/CoverageProcessingException.html" title="class in org.geotools.coverage.processing">CoverageProcessingException</A></PRE>
<DL>
<DD>Adds constants (one for each band) to every sample values of the source coverage.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>source</CODE> - The source coverage.<DD><CODE>constants</CODE> - The constants to add to each band.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/geotools/coverage/processing/CoverageProcessingException.html" title="class in org.geotools.coverage.processing">CoverageProcessingException</A></CODE> - if the operation can't be applied.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/coverage/processing/operation/AddConst.html" title="class in org.geotools.coverage.processing.operation"><CODE>AddConst</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="subtract(org.opengis.coverage.Coverage, double[])"><!-- --></A><H3>
subtract</H3>
<PRE>
public Coverage <B>subtract</B>(Coverage&nbsp;source,
                         double[]&nbsp;constants)
                                       throws <A HREF="../../../../org/geotools/coverage/processing/CoverageProcessingException.html" title="class in org.geotools.coverage.processing">CoverageProcessingException</A></PRE>
<DL>
<DD>Subtracts constants (one for each band) from every sample values of the source coverage.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>source</CODE> - The source coverage.<DD><CODE>constants</CODE> - The constants to subtract to each band.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/geotools/coverage/processing/CoverageProcessingException.html" title="class in org.geotools.coverage.processing">CoverageProcessingException</A></CODE> - if the operation can't be applied.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/coverage/processing/operation/SubtractConst.html" title="class in org.geotools.coverage.processing.operation"><CODE>SubtractConst</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="subtractFrom(org.opengis.coverage.Coverage, double[])"><!-- --></A><H3>
subtractFrom</H3>
<PRE>
public Coverage <B>subtractFrom</B>(Coverage&nbsp;source,
                             double[]&nbsp;constants)
                                           throws <A HREF="../../../../org/geotools/coverage/processing/CoverageProcessingException.html" title="class in org.geotools.coverage.processing">CoverageProcessingException</A></PRE>
<DL>
<DD>Subtracts every sample values of the source coverage from constants (one for each band).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>source</CODE> - The source coverage.<DD><CODE>constants</CODE> - The constants to subtract from.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/geotools/coverage/processing/CoverageProcessingException.html" title="class in org.geotools.coverage.processing">CoverageProcessingException</A></CODE> - if the operation can't be applied.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/coverage/processing/operation/SubtractFromConst.html" title="class in org.geotools.coverage.processing.operation"><CODE>SubtractFromConst</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="multiply(org.opengis.coverage.Coverage, double[])"><!-- --></A><H3>
multiply</H3>
<PRE>
public Coverage <B>multiply</B>(Coverage&nbsp;source,
                         double[]&nbsp;constants)
                                       throws <A HREF="../../../../org/geotools/coverage/processing/CoverageProcessingException.html" title="class in org.geotools.coverage.processing">CoverageProcessingException</A></PRE>
<DL>
<DD>Multiplies every sample values of the source coverage by constants (one for each band).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>source</CODE> - The source coverage.<DD><CODE>constants</CODE> - The constants to multiply to each band.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/geotools/coverage/processing/CoverageProcessingException.html" title="class in org.geotools.coverage.processing">CoverageProcessingException</A></CODE> - if the operation can't be applied.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/coverage/processing/operation/MultiplyConst.html" title="class in org.geotools.coverage.processing.operation"><CODE>MultiplyConst</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="divideBy(org.opengis.coverage.Coverage, double[])"><!-- --></A><H3>
divideBy</H3>
<PRE>
public Coverage <B>divideBy</B>(Coverage&nbsp;source,
                         double[]&nbsp;constants)
                                       throws <A HREF="../../../../org/geotools/coverage/processing/CoverageProcessingException.html" title="class in org.geotools.coverage.processing">CoverageProcessingException</A></PRE>
<DL>
<DD>Divides every sample values of the source coverage by constants (one for each band).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>source</CODE> - The source coverage.<DD><CODE>constants</CODE> - The constants to divides by.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/geotools/coverage/processing/CoverageProcessingException.html" title="class in org.geotools.coverage.processing">CoverageProcessingException</A></CODE> - if the operation can't be applied.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/coverage/processing/operation/DivideByConst.html" title="class in org.geotools.coverage.processing.operation"><CODE>DivideByConst</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="rescale(org.opengis.coverage.Coverage, double[], double[])"><!-- --></A><H3>
rescale</H3>
<PRE>
public Coverage <B>rescale</B>(Coverage&nbsp;source,
                        double[]&nbsp;constants,
                        double[]&nbsp;offsets)
                                      throws <A HREF="../../../../org/geotools/coverage/processing/CoverageProcessingException.html" title="class in org.geotools.coverage.processing">CoverageProcessingException</A></PRE>
<DL>
<DD>Maps the sample values of a coverage from one range to another range.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>source</CODE> - The source coverage.<DD><CODE>constants</CODE> - The constants to multiply to each band.<DD><CODE>offsets</CODE> - The constants to add to each band.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/geotools/coverage/processing/CoverageProcessingException.html" title="class in org.geotools.coverage.processing">CoverageProcessingException</A></CODE> - if the operation can't be applied.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/coverage/processing/operation/Rescale.html" title="class in org.geotools.coverage.processing.operation"><CODE>Rescale</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="invert(org.opengis.coverage.Coverage)"><!-- --></A><H3>