coordinateaccess.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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<A NAME="toAttributeArray(int)"><!-- --></A><H3>
toAttributeArray</H3>
<PRE>
public <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>toAttributeArray</B>(int&nbsp;attribute)</PRE>
<DL>
<DD>toAttributeArray purpose.
 
 <p>
 Description ...
 </p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>attribute</CODE> - Between 0 and getNumAttrributes()
<DT><B>Returns:</B><DD>an array of attributes</DL>
</DD>
</DL>
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<A NAME="setOrdinateArray(int, double[])"><!-- --></A><H3>
setOrdinateArray</H3>
<PRE>
public void <B>setOrdinateArray</B>(int&nbsp;ordinate,
                             double[]&nbsp;ordinateArray)</PRE>
<DL>
<DD>Supplies an array of ordiantes.
 
 <p>
 The ordinateArray should be the same length as the CoordinateSequence.<br>
 ordinate should be between 0 and getDimension().<br>
 If the attributes are doubles as well, then ordinate can be as great as<br>
 getDimension() + getNumAttributes().
 </p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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<A NAME="setAttributeArray(int, java.lang.Object)"><!-- --></A><H3>
setAttributeArray</H3>
<PRE>
public void <B>setAttributeArray</B>(int&nbsp;attribute,
                              <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;attributeArray)</PRE>
<DL>
<DD>setAttributeArray purpose.
 
 <p>
 Description ...
 </p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>attribute</CODE> - between 0 and getNumAttributes()<DD><CODE>attributeArray</CODE> - May be an object or primative array</DL>
</DD>
</DL>
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<A NAME="toOrdinateArrays()"><!-- --></A><H3>
toOrdinateArrays</H3>
<PRE>
public double[][] <B>toOrdinateArrays</B>()</PRE>
<DL>
<DD>Retrieve ordinate information (an array of ordinates for each
 coordinate).
 
 <p>
 Example: (x,y,m,g) getDimension()==2, getNumAttributes()==2
 </p>
 <pre><code>
 [ [ x1, x2,...,xN], [ y1, y2,...,yN] ]
 </code></pre>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>column major ordinate arrays (these are spatially significant)</DL>
</DD>
</DL>
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<A NAME="toAttributeArrays()"><!-- --></A><H3>
toAttributeArrays</H3>
<PRE>
public <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>toAttributeArrays</B>()</PRE>
<DL>
<DD>Retrieve Attribute information (an array of attributes for each
 coordiante).
 
 <p>
 Example: (x,y,m,g) getDimension()==2, getAttributes()==2
 </p>
 <pre><code>
 [ [ m1, m2,...,mN], [ g1, g2,..., gN] ]
 </code></pre>
 
 <p></p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>Attribute Arrays, may be object or primative arrays</DL>
</DD>
</DL>
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<A NAME="setCoordinateArrays(double[][], java.lang.Object[])"><!-- --></A><H3>
setCoordinateArrays</H3>
<PRE>
public void <B>setCoordinateArrays</B>(double[][]&nbsp;ordinateArrays,
                                <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>[]&nbsp;attributeArrays)</PRE>
<DL>
<DD>Completely replace sequence with the provided information.
 
 <p>
 Example: (x,y,m,g) getDimension()==2, getNumAttributes()==2
 </p>
 <pre><code>
 <b>dimensions</b>:[ [ x1, x2,...,xN], [ y1, y2,...,yN] ]
 <b>attributes</b>:[ [ m1, m2,...,mN], [ g1, g2,..., gN] ]
 </code></pre>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ordinateArrays</CODE> - dimensions column major ordinate arrays 
                        (these are spatially significant)<DD><CODE>attributeArrays</CODE> - Indiviual attribute arrays may be primative or
                        object arrays</DL>
</DD>
</DL>
<HR>

<A NAME="setAt(int, double[], java.lang.Object[])"><!-- --></A><H3>
setAt</H3>
<PRE>
public void <B>setAt</B>(int&nbsp;coordinate,
                  double[]&nbsp;ordinates,
                  <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>[]&nbsp;attributes)</PRE>
<DL>
<DD>Allows modification of a single coordinate (including attribute values).
 
 <p>
 Normal Use: where D is getDimensions() and N is getNumAttributes():
 </p>
 <pre><code>
 <b>dimensions</b>: [ ordX, ordY, ..., ordD ]
 <b>attributes</b>: [ atr1, atr2, ...., atrN ]
 </code></pre>
 
 <p>
 When dealing with attributes that are all double values the ordinates
 array may be used to set both ordinates and attribute values.
 </p>
 
 <p>
 Optimized Use: where D is getDimensions() and N is getNumAttributes():
 </p>
 <pre><code>
 <b>dimensions</b>: [ ordX, ordY, ..., ordD, atr1, atr2, ... attrN ]
 <b>attributes</b>: null
 </code></pre>
 
 <p></p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>coordinate</CODE> - index of coordiante to be modified<DD><CODE>ordinates</CODE> - array ordinate values (may be extended with attribute
        values)<DD><CODE>attributes</CODE> - array of attribute values, or null is ordinates has
        been extended</DL>
</DD>
</DL>
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