coveragestack.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><DL>
<DT><B>Parameters:</B><DD><CODE>coord</CODE> - The coordinate point where to evaluate.<DD><CODE>dest</CODE> - An array in which to store values, or  to create a new array.
<DT><B>Returns:</B><DD>The  array, or a newly created array if  was null.
<DT><B>Throws:</B>
<DD><CODE>PointOutsideCoverageException</CODE> - if  is outside coverage.
<DD><CODE>CannotEvaluateException</CODE> - if the computation failed for some other reason.</DL>
</DD>
</DL>
<HR>

<A NAME="evaluate(org.opengis.spatialschema.geometry.DirectPosition, float[])"><!-- --></A><H3>
evaluate</H3>
<PRE>
public float[] <B>evaluate</B>(DirectPosition&nbsp;coord,
                        float[]&nbsp;dest)
                 throws CannotEvaluateException</PRE>
<DL>
<DD>Returns a sequence of float values for a given point in the coverage.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>evaluate</CODE> in interface <CODE>Coverage</CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../org/geotools/coverage/AbstractCoverage.html#evaluate(org.opengis.spatialschema.geometry.DirectPosition, float[])">evaluate</A></CODE> in class <CODE><A HREF="../../../org/geotools/coverage/AbstractCoverage.html" title="class in org.geotools.coverage">AbstractCoverage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>coord</CODE> - The coordinate point where to evaluate.<DD><CODE>dest</CODE> - An array in which to store values, or  to create a new array.
<DT><B>Returns:</B><DD>The  array, or a newly created array if  was null.
<DT><B>Throws:</B>
<DD><CODE>PointOutsideCoverageException</CODE> - if  is outside coverage.
<DD><CODE>CannotEvaluateException</CODE> - if the computation failed for some other reason.</DL>
</DD>
</DL>
<HR>

<A NAME="evaluate(org.opengis.spatialschema.geometry.DirectPosition, double[])"><!-- --></A><H3>
evaluate</H3>
<PRE>
public double[] <B>evaluate</B>(DirectPosition&nbsp;coord,
                         double[]&nbsp;dest)
                  throws CannotEvaluateException</PRE>
<DL>
<DD>Returns a sequence of double values for a given point in the coverage.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>evaluate</CODE> in interface <CODE>Coverage</CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../org/geotools/coverage/AbstractCoverage.html#evaluate(org.opengis.spatialschema.geometry.DirectPosition, double[])">evaluate</A></CODE> in class <CODE><A HREF="../../../org/geotools/coverage/AbstractCoverage.html" title="class in org.geotools.coverage">AbstractCoverage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>coord</CODE> - The coordinate point where to evaluate.<DD><CODE>dest</CODE> - An array in which to store values, or  to create a new array.
<DT><B>Returns:</B><DD>The  array, or a newly created array if  was null.
<DT><B>Throws:</B>
<DD><CODE>PointOutsideCoverageException</CODE> - if  is outside coverage.
<DD><CODE>CannotEvaluateException</CODE> - if the computation failed for some other reason.</DL>
</DD>
</DL>
<HR>

<A NAME="coveragesAt(double)"><!-- --></A><H3>
coveragesAt</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/List.html" title="class or interface in java.util">List</A> <B>coveragesAt</B>(double&nbsp;z)</PRE>
<DL>
<DD>Returns the coverages to be used for the specified <var>z</var> value. Special cases:
 <p>
 <ul>
   <li>If there is no coverage available for the specified <var>z</var> value, returns
       an <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Collections.html#EMPTY_LIST" title="class or interface in java.util">empty list</A>.</li>
   <li>If there is only one coverage available, or if the specified <var>z</var> value
       falls exactly in the middle of the <A HREF="../../../org/geotools/coverage/CoverageStack.Element.html#getZRange()">range value</A>
       (i.e. no interpolation are needed), or if <A HREF="../../../org/geotools/coverage/CoverageStack.html#setInterpolationEnabled(boolean)">interpolations are disabled</A>, then this method returns a
       <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Collections.html#singletonList(java.lang.Object)" title="class or interface in java.util">singleton</A>.</li>
   <li>Otherwise, this method returns a list containing at least 2 coverages, one before
       and one after the specified <var>z</var> value.</li>
 </ul>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>z</CODE> - The z value for the coverages to be returned.
<DT><B>Returns:</B><DD>The coverages for the specified values. May contains 0, 1 or 2 elements.<DT><B>Since:</B></DT>
  <DD>2.3</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="isInterpolationEnabled()"><!-- --></A><H3>
isInterpolationEnabled</H3>
<PRE>
public boolean <B>isInterpolationEnabled</B>()</PRE>
<DL>
<DD>Returns  if interpolation are enabled in the <var>z</var> value dimension.
 Interpolations are enabled by default.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setInterpolationEnabled(boolean)"><!-- --></A><H3>
setInterpolationEnabled</H3>
<PRE>
public void <B>setInterpolationEnabled</B>(boolean&nbsp;flag)</PRE>
<DL>
<DD>Enable or disable interpolations in the <var>z</var> value dimension.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="addIIOReadWarningListener(javax.imageio.event.IIOReadWarningListener)"><!-- --></A><H3>
addIIOReadWarningListener</H3>
<PRE>
public void <B>addIIOReadWarningListener</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/event/IIOReadWarningListener.html" title="class or interface in javax.imageio.event">IIOReadWarningListener</A>&nbsp;listener)</PRE>
<DL>
<DD>Adds an <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/event/IIOReadWarningListener.html" title="class or interface in javax.imageio.event"><CODE>IIOReadWarningListener</CODE></A> to the list of registered warning listeners.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="removeIIOReadWarningListener(javax.imageio.event.IIOReadWarningListener)"><!-- --></A><H3>
removeIIOReadWarningListener</H3>
<PRE>
public void <B>removeIIOReadWarningListener</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/event/IIOReadWarningListener.html" title="class or interface in javax.imageio.event">IIOReadWarningListener</A>&nbsp;listener)</PRE>
<DL>
<DD>Removes an <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/event/IIOReadWarningListener.html" title="class or interface in javax.imageio.event"><CODE>IIOReadWarningListener</CODE></A> from the list of registered warning listeners.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="addIIOReadProgressListener(javax.imageio.event.IIOReadProgressListener)"><!-- --></A><H3>
addIIOReadProgressListener</H3>
<PRE>
public void <B>addIIOReadProgressListener</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/event/IIOReadProgressListener.html" title="class or interface in javax.imageio.event">IIOReadProgressListener</A>&nbsp;listener)</PRE>
<DL>
<DD>Adds an <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/event/IIOReadProgressListener.html" title="class or interface in javax.imageio.event"><CODE>IIOReadProgressListener</CODE></A> to the list of registered progress listeners.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="removeIIOReadProgressListener(javax.imageio.event.IIOReadProgressListener)"><!-- --></A><H3>
removeIIOReadProgressListener</H3>
<PRE>
public void <B>removeIIOReadProgressListener</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/event/IIOReadProgressListener.html" title="class or interface in javax.imageio.event">IIOReadProgressListener</A>&nbsp;listener)</PRE>
<DL>
<DD>Removes an <A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/imageio/event/IIOReadProgressListener.html" title="class or interface in javax.imageio.event"><CODE>IIOReadProgressListener</CODE></A> from the list of registered progress listeners.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="logLoading(java.util.logging.LogRecord)"><!-- --></A><H3>
logLoading</H3>
<PRE>
protected void <B>logLoading</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/logging/LogRecord.html" title="class or interface in java.util.logging">LogRecord</A>&nbsp;record)</PRE>
<DL>
<DD>Invoked automatically when an image is about to be loaded. The default implementation
 logs the message in the  logger. Subclasses can override
 this method if they wants a different logging.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>record</CODE> - The log record. The message contains information about the images to load.</DL>
</DD>
</DL>
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