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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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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
<TD COLSPAN=2>Classes in <A HREF="../../../../org/geotools/map/package-summary.html">org.geotools.map</A> that implement <A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A></FONT></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/map/DefaultMapLayer.html" title="class in org.geotools.map">DefaultMapLayer</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Default implementation of the MapLayer implementation</TD>
</TR>
</TABLE>
&nbsp;
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
<TD COLSPAN=2>Methods in <A HREF="../../../../org/geotools/map/package-summary.html">org.geotools.map</A> that return <A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A></FONT></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A></CODE></FONT></TD>
<TD><CODE><B>DefaultMapContext.</B><B><A HREF="../../../../org/geotools/map/DefaultMapContext.html#removeLayer(int)">removeLayer</A></B>(int&nbsp;index)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DOCUMENT ME!</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>[]</CODE></FONT></TD>
<TD><CODE><B>DefaultMapContext.</B><B><A HREF="../../../../org/geotools/map/DefaultMapContext.html#getLayers()">getLayers</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return this model's list of layers. </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A></CODE></FONT></TD>
<TD><CODE><B>DefaultMapContext.</B><B><A HREF="../../../../org/geotools/map/DefaultMapContext.html#getLayer(int)">getLayer</A></B>(int&nbsp;index)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return the requested layer.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A></CODE></FONT></TD>
<TD><CODE><B>MapContext.</B><B><A HREF="../../../../org/geotools/map/MapContext.html#removeLayer(int)">removeLayer</A></B>(int&nbsp;index)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Remove a layer and trigger a <CODE>LayerListEvent</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>[]</CODE></FONT></TD>
<TD><CODE><B>MapContext.</B><B><A HREF="../../../../org/geotools/map/MapContext.html#getLayers()">getLayers</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return this model's list of layers. </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A></CODE></FONT></TD>
<TD><CODE><B>MapContext.</B><B><A HREF="../../../../org/geotools/map/MapContext.html#getLayer(int)">getLayer</A></B>(int&nbsp;index)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return the requested layer.</TD>
</TR>
</TABLE>
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<P>

<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor">
<TD COLSPAN=2>Methods in <A HREF="../../../../org/geotools/map/package-summary.html">org.geotools.map</A> with parameters of type <A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A></FONT></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B>DefaultMapContext.</B><B><A HREF="../../../../org/geotools/map/DefaultMapContext.html#addLayer(int, org.geotools.map.MapLayer)">addLayer</A></B>(int&nbsp;index,
         <A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>&nbsp;layer)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add a new layer if not already present and trigger a <CODE>LayerListEvent</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B>DefaultMapContext.</B><B><A HREF="../../../../org/geotools/map/DefaultMapContext.html#addLayer(org.geotools.map.MapLayer)">addLayer</A></B>(<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>&nbsp;layer)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add a new layer and trigger a <CODE>LayerListEvent</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B>DefaultMapContext.</B><B><A HREF="../../../../org/geotools/map/DefaultMapContext.html#removeLayer(org.geotools.map.MapLayer)">removeLayer</A></B>(<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>&nbsp;layer)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Remove a layer and trigger a <CODE>LayerListEvent</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B>DefaultMapContext.</B><B><A HREF="../../../../org/geotools/map/DefaultMapContext.html#addLayers(org.geotools.map.MapLayer[])">addLayers</A></B>(<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>[]&nbsp;layers)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add an array of new layers and trigger a <CODE>LayerListEvent</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>DefaultMapContext.</B><B><A HREF="../../../../org/geotools/map/DefaultMapContext.html#removeLayers(org.geotools.map.MapLayer[])">removeLayers</A></B>(<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>[]&nbsp;layers)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Remove an array of layers and trigger a <CODE>LayerListEvent</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B>DefaultMapContext.</B><B><A HREF="../../../../org/geotools/map/DefaultMapContext.html#indexOf(org.geotools.map.MapLayer)">indexOf</A></B>(<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>&nbsp;layer)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B>MapContext.</B><B><A HREF="../../../../org/geotools/map/MapContext.html#addLayer(org.geotools.map.MapLayer)">addLayer</A></B>(<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>&nbsp;layer)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add a new layer if not already present and trigger a
 <CODE>LayerListEvent</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B>MapContext.</B><B><A HREF="../../../../org/geotools/map/MapContext.html#addLayer(int, org.geotools.map.MapLayer)">addLayer</A></B>(int&nbsp;index,
         <A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>&nbsp;layer)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add a new layer in the specified position and trigger a
 <CODE>LayerListEvent</CODE>. </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B>MapContext.</B><B><A HREF="../../../../org/geotools/map/MapContext.html#removeLayer(org.geotools.map.MapLayer)">removeLayer</A></B>(<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>&nbsp;layer)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Remove a layer, if present, and trigger a <CODE>LayerListEvent</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B>MapContext.</B><B><A HREF="../../../../org/geotools/map/MapContext.html#addLayers(org.geotools.map.MapLayer[])">addLayers</A></B>(<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>[]&nbsp;layers)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add an array of new layers and trigger a <CODE>LayerListEvent</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B>MapContext.</B><B><A HREF="../../../../org/geotools/map/MapContext.html#removeLayers(org.geotools.map.MapLayer[])">removeLayers</A></B>(<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>[]&nbsp;layers)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Remove an array of layers and trigger a <CODE>LayerListEvent</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B>MapContext.</B><B><A HREF="../../../../org/geotools/map/MapContext.html#indexOf(org.geotools.map.MapLayer)">indexOf</A></B>(<A HREF="../../../../org/geotools/map/MapLayer.html" title="interface in org.geotools.map">MapLayer</A>&nbsp;layer)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the index of the first occurrence of the specified layer, or -1