abstractcoverage.renderable.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

yAxis</H3>
<PRE>
protected final int <B>yAxis</B></PRE>
<DL>
<DD>Dimension to use for <var>y</var> axis.
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<DL>
</DL>
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<A NAME="coordinate"><!-- --></A><H3>
coordinate</H3>
<PRE>
protected final <A HREF="../../../org/geotools/geometry/GeneralDirectPosition.html" title="class in org.geotools.geometry">GeneralDirectPosition</A> <B>coordinate</B></PRE>
<DL>
<DD>A coordinate point where to evaluate the function. The point dimension is equals
 to the <A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getDimension()">coverage's dimension</A>. The
 <A HREF="../../../org/geotools/coverage/AbstractCoverage.Renderable.html#xAxis">x</A> and <A HREF="../../../org/geotools/coverage/AbstractCoverage.Renderable.html#yAxis"><CODE>y</CODE></A> ordinates will be ignored,
 since they will vary for each pixel to be evaluated. Other ordinates,
 if any, should be set to a fixed value. For example a coverage may be
 three-dimensional, where the third dimension is the time axis. In
 such case,  should be set to the point in
 time where to evaluate the coverage. By default, all ordinates are
 initialized to 0. Subclasses should set the desired values in their
 constructor if needed.
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</DL>
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<!-- ========= CONSTRUCTOR DETAIL ======== -->

<A NAME="constructor_detail"><!-- --></A>
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<B>Constructor Detail</B></FONT></TD>
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<A NAME="AbstractCoverage.Renderable(int, int)"><!-- --></A><H3>
AbstractCoverage.Renderable</H3>
<PRE>
public <B>AbstractCoverage.Renderable</B>(int&nbsp;xAxis,
                                   int&nbsp;yAxis)</PRE>
<DL>
<DD>Constructs a renderable image.
<P>
<DT><B>Parameters:</B><DD><CODE>xAxis</CODE> - Dimension to use for <var>x</var> axis.<DD><CODE>yAxis</CODE> - Dimension to use for <var>y</var> axis.</DL>

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

<A NAME="method_detail"><!-- --></A>
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<B>Method Detail</B></FONT></TD>
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<A NAME="getSources()"><!-- --></A><H3>
getSources</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Vector.html" title="class or interface in java.util">Vector</A> <B>getSources</B>()</PRE>
<DL>
<DD>Returns  to indicate that no source information is
 available.
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<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html#getSources()" title="class or interface in java.awt.image.renderable">getSources</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html" title="class or interface in java.awt.image.renderable">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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<A NAME="isDynamic()"><!-- --></A><H3>
isDynamic</H3>
<PRE>
public boolean <B>isDynamic</B>()</PRE>
<DL>
<DD>Returns  if successive renderings with the same arguments
 may produce different results. The default implementation returns
 .
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html#isDynamic()" title="class or interface in java.awt.image.renderable">isDynamic</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html" title="class or interface in java.awt.image.renderable">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/coverage/grid/GridCoverage2D.html#isDataEditable()"><CODE>GridCoverage2D.isDataEditable()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="isComplex()"><!-- --></A><H3>
isComplex</H3>
<PRE>
public boolean <B>isComplex</B>()</PRE>
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<DD>Returns  since values are not complex.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/ImageFunction.html#isComplex()" title="class or interface in javax.media.jai">isComplex</A></CODE> in interface <CODE><A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/ImageFunction.html" title="class or interface in javax.media.jai">ImageFunction</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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<A NAME="getWidth()"><!-- --></A><H3>
getWidth</H3>
<PRE>
public float <B>getWidth</B>()</PRE>
<DL>
<DD>Gets the width in coverage coordinate space.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html#getWidth()" title="class or interface in java.awt.image.renderable">getWidth</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html" title="class or interface in java.awt.image.renderable">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getEnvelope()"><CODE>AbstractCoverage.getEnvelope()</CODE></A>, 
<A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getCoordinateReferenceSystem()"><CODE>AbstractCoverage.getCoordinateReferenceSystem()</CODE></A></DL>
</DD>
</DL>
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<A NAME="getHeight()"><!-- --></A><H3>
getHeight</H3>
<PRE>
public float <B>getHeight</B>()</PRE>
<DL>
<DD>Gets the height in coverage coordinate space.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html#getHeight()" title="class or interface in java.awt.image.renderable">getHeight</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html" title="class or interface in java.awt.image.renderable">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getEnvelope()"><CODE>AbstractCoverage.getEnvelope()</CODE></A>, 
<A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getCoordinateReferenceSystem()"><CODE>AbstractCoverage.getCoordinateReferenceSystem()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getMinX()"><!-- --></A><H3>
getMinX</H3>
<PRE>
public float <B>getMinX</B>()</PRE>
<DL>
<DD>Gets the minimum <var>X</var> coordinate of the rendering-independent image
 data. This is the <A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getEnvelope()">coverage's envelope</A>
 minimal value for the <A HREF="../../../org/geotools/coverage/AbstractCoverage.Renderable.html#xAxis">x axis</A>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html#getMinX()" title="class or interface in java.awt.image.renderable">getMinX</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html" title="class or interface in java.awt.image.renderable">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getEnvelope()"><CODE>AbstractCoverage.getEnvelope()</CODE></A>, 
<A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getCoordinateReferenceSystem()"><CODE>AbstractCoverage.getCoordinateReferenceSystem()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getMinY()"><!-- --></A><H3>
getMinY</H3>
<PRE>
public float <B>getMinY</B>()</PRE>
<DL>
<DD>Gets the minimum <var>Y</var> coordinate of the rendering-independent image
 data. This is the <A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getEnvelope()">coverage's envelope</A>
 minimal value for the <A HREF="../../../org/geotools/coverage/AbstractCoverage.Renderable.html#yAxis">y axis</A>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html#getMinY()" title="class or interface in java.awt.image.renderable">getMinY</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html" title="class or interface in java.awt.image.renderable">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getEnvelope()"><CODE>AbstractCoverage.getEnvelope()</CODE></A>, 
<A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getCoordinateReferenceSystem()"><CODE>AbstractCoverage.getCoordinateReferenceSystem()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="createDefaultRendering()"><!-- --></A><H3>
createDefaultRendering</H3>
<PRE>
public <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> <B>createDefaultRendering</B>()</PRE>
<DL>
<DD>Returns a rendered image with a default width and height in pixels.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html#createDefaultRendering()" title="class or interface in java.awt.image.renderable">createDefaultRendering</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/image/renderable/RenderableImage.html" title="class or interface in java.awt.image.renderable">RenderableImage</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>A rendered image containing the rendered data</DL>
</DD>
</DL>
<HR>

<A NAME="createScaledRendering(int, int, java.awt.RenderingHints)"><!-- --></A><H3>
createScaledRendering</H3>
<PRE>
public <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> <B>createScaledRendering</B>(int&nbsp;width,
                                           int&nbsp;height,