abstractcoverage.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

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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/coverage/AbstractCoverage.html#show(java.lang.String)">show</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;title)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Display this coverage in a windows. </TD>
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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/coverage/AbstractCoverage.html#show(java.lang.String, int, int)">show</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;title,
     int&nbsp;xAxis,
     int&nbsp;yAxis)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Display this coverage in a windows. </TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/coverage/AbstractCoverage.html#toString()">toString</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a string repr閟entation of this coverage. </TD>
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&nbsp;<A NAME="methods_inherited_from_class_PropertySourceImpl"><!-- --></A>
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<TD><B>Methods inherited from class <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PropertySourceImpl.html" title="class or interface in javax.media.jai">PropertySourceImpl</A></B></TD>
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<TD><CODE><A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PropertySourceImpl.html#getProperties()" title="class or interface in javax.media.jai">getProperties</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PropertySourceImpl.html#getProperty(java.lang.String)" title="class or interface in javax.media.jai">getProperty</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PropertySourceImpl.html#getPropertyClass(java.lang.String)" title="class or interface in javax.media.jai">getPropertyClass</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PropertySourceImpl.html#getPropertyNames()" title="class or interface in javax.media.jai">getPropertyNames</A>, <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PropertySourceImpl.html#getPropertyNames(java.lang.String)" title="class or interface in javax.media.jai">getPropertyNames</A></CODE></TD>
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&nbsp;<A NAME="methods_inherited_from_class_Object"><!-- --></A>
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<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>
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<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#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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&nbsp;<A NAME="methods_inherited_from_class_Coverage"><!-- --></A>
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<TD><B>Methods inherited from interface Coverage</B></TD>
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<TD><CODE>evaluate, getNumSampleDimensions, getSampleDimension</CODE></TD>
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<!-- ============ FIELD DETAIL =========== -->

<A NAME="field_detail"><!-- --></A>
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<B>Field Detail</B></FONT></TD>
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<A NAME="crs"><!-- --></A><H3>
crs</H3>
<PRE>
protected final CoordinateReferenceSystem <B>crs</B></PRE>
<DL>
<DD>The coordinate reference system, or  if there is none.
<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>
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</TABLE>

<A NAME="AbstractCoverage(java.lang.CharSequence, org.opengis.referencing.crs.CoordinateReferenceSystem, javax.media.jai.PropertySource, java.util.Map)"><!-- --></A><H3>
AbstractCoverage</H3>
<PRE>
protected <B>AbstractCoverage</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/CharSequence.html" title="class or interface in java.lang">CharSequence</A>&nbsp;name,
                           CoordinateReferenceSystem&nbsp;crs,
                           <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>&nbsp;source,
                           <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;properties)</PRE>
<DL>
<DD>Constructs a coverage using the specified coordinate reference system. If
 the coordinate reference system is , then the subclasses
 must override <A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getDimension()"><CODE>getDimension()</CODE></A>.
<P>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - The coverage name.<DD><CODE>crs</CODE> - The coordinate reference system. This specifies the coordinate
            system used when accessing a coverage or grid coverage with
            the  methods.<DD><CODE>source</CODE> - The source for this coverage, or  if none. Source
            may be (but is not limited to) a <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"><CODE>PlanarImage</CODE></A> or an
            other  object.<DD><CODE>properties</CODE> - The set of properties for this coverage, or  if
            there is none. "Properties" in <cite>Java Advanced Imaging</cite>
            is what OpenGIS calls "Metadata". Keys are <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang"><CODE>String</CODE></A>
            objects (<A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/util/CaselessStringKey.html" title="class or interface in javax.media.jai.util"><CODE>CaselessStringKey</CODE></A> are accepted as well),
            while values may be any <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang"><CODE>Object</CODE></A>.</DL>
<HR>

<A NAME="AbstractCoverage(java.lang.CharSequence, org.opengis.coverage.Coverage)"><!-- --></A><H3>
AbstractCoverage</H3>
<PRE>
protected <B>AbstractCoverage</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/CharSequence.html" title="class or interface in java.lang">CharSequence</A>&nbsp;name,
                           Coverage&nbsp;coverage)</PRE>
<DL>
<DD>Constructs a new coverage with the same parameters than the specified
 coverage. <strong>Note:</strong> This constructor keeps a strong
 reference to the source coverage (through <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/PropertySourceImpl.html" title="class or interface in javax.media.jai"><CODE>PropertySourceImpl</CODE></A>).
 In many cases, it is not a problem since <CODE>GridCoverage</CODE> will
 retains a strong reference to its source anyway.
<P>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - The name for this coverage, or  for the same than .<DD><CODE>coverage</CODE> - The source coverage.</DL>

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

<A NAME="method_detail"><!-- --></A>
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<B>Method Detail</B></FONT></TD>
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<A NAME="getName()"><!-- --></A><H3>
getName</H3>
<PRE>
public InternationalString <B>getName</B>()</PRE>
<DL>
<DD>Returns the coverage name. The default implementation returns the name
 specified at construction time.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getDimension()"><!-- --></A><H3>
getDimension</H3>
<PRE>
public final int <B>getDimension</B>()</PRE>
<DL>
<DD>Returns the dimension of this coverage. This is a shortcut for
 <code><A HREF="../../../org/geotools/coverage/AbstractCoverage.html#crs">crs</A>.getCoordinateSystem().getDimension()</code>.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getCoordinateReferenceSystem()"><!-- --></A><H3>
getCoordinateReferenceSystem</H3>
<PRE>
public CoordinateReferenceSystem <B>getCoordinateReferenceSystem</B>()</PRE>
<DL>
<DD>Returns the coordinate reference system to which the objects in its domain are
 referenced. This is the CRS used when accessing a coverage or grid coverage with
 the  methods. This coordinate reference system is usually
 different than coordinate system of the grid. It is the target coordinate reference
 system of the <CODE>gridToCRS</CODE> math transform.
 <p>
 Grid coverage can be accessed (re-projected) with new coordinate reference system
 with the <CODE>GridCoverageProcessor</CODE> component. In this case, a new instance of
 a grid coverage is created.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>getCoordinateReferenceSystem</CODE> in interface <CODE>Coverage</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The coordinate reference system used when accessing a coverage or
         grid coverage with the  methods.<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/coverage/grid/GeneralGridGeometry.html#getGridToCoordinateSystem()"><CODE>GeneralGridGeometry.getGridToCoordinateSystem()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getDimensionNames()"><!-- --></A><H3>
getDimensionNames</H3>
<PRE>
public InternationalString[] <B>getDimensionNames</B>()</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>This information can be obtained from the underlying coordinate system.</I>
<P>
<DD>Returns the names of each dimension in this coverage. Typically these
 names are "x", "y", "z" and "t". The number of items in the sequence is
 the number of dimensions in the coverage. Grid coverages are typically
 2D (<var>x</var>, <var>y</var>) while other coverages may be
 3D (<var>x</var>, <var>y</var>, <var>z</var>) or
 4D (<var>x</var>, <var>y</var>, <var>z</var>, <var>t</var>).
 The <A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getDimension()">number of dimensions</A> of the coverage is
 the number of entries in the list of dimension names.
 <p>
 The default implementation ask for
 coordinate system axis names, or returns
 "x", "y"... if this coverage has no CRS.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>getDimensionNames</CODE> in interface <CODE>Coverage</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The names of each dimension. The array's length is equals to
         <A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getDimension()"><CODE>getDimension()</CODE></A>.</DL>
</DD>
</DL>
<HR>

<A NAME="getDimensionNames(java.util.Locale)"><!-- --></A><H3>
getDimensionNames</H3>
<PRE>
public final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>[] <B>getDimensionNames</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Locale.html" title="class or interface in java.util">Locale</A>&nbsp;locale)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>Replaced by <A HREF="../../../org/geotools/coverage/AbstractCoverage.html#getDimensionNames()"><CODE>getDimensionNames()</CODE></A>.</I>
<P>
<DD>Returns the names of each dimension in this coverage.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getEnvelope()"><!-- --></A><H3>
getEnvelope</H3>
<PRE>
public Envelope <B>getEnvelope</B>()</PRE>
<DL>
<DD>Returns the bounding box for the coverage domain in coordinate reference
 system coordinates. May be null if this coverage has no associated
 coordinate reference system. For grid coverages, the grid cells are
 centered on each grid coordinate. The envelope for a 2-D grid coverage
 includes the following corner positions.
 
 <blockquote><pre>