directposition2d.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

<DL>
<DD>Returns the coordinate reference system in which the coordinate is given.
 May be  if this particular  is included
 in a larger object with such a reference to a coordinate reference system.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>getCoordinateReferenceSystem</CODE> in interface <CODE>DirectPosition</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The coordinate reference system, or .</DL>
</DD>
</DL>
<HR>

<A NAME="setCoordinateReferenceSystem(org.opengis.referencing.crs.CoordinateReferenceSystem)"><!-- --></A><H3>
setCoordinateReferenceSystem</H3>
<PRE>
public void <B>setCoordinateReferenceSystem</B>(CoordinateReferenceSystem&nbsp;crs)</PRE>
<DL>
<DD>Set the coordinate reference system in which the coordinate is given.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>crs</CODE> - The new coordinate reference system, or .</DL>
</DD>
</DL>
<HR>

<A NAME="getDimension()"><!-- --></A><H3>
getDimension</H3>
<PRE>
public final int <B>getDimension</B>()</PRE>
<DL>
<DD>The length of coordinate sequence (the number of entries).
 This is always 2 for <code>DirectPosition2D</code> objects.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>getDimension</CODE> in interface <CODE>DirectPosition</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The dimensionality of this position.</DL>
</DD>
</DL>
<HR>

<A NAME="getCoordinates()"><!-- --></A><H3>
getCoordinates</H3>
<PRE>
public double[] <B>getCoordinates</B>()</PRE>
<DL>
<DD>Returns a sequence of numbers that hold the coordinate of this position in its
 reference system.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>getCoordinates</CODE> in interface <CODE>DirectPosition</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The coordinates</DL>
</DD>
</DL>
<HR>

<A NAME="getOrdinate(int)"><!-- --></A><H3>
getOrdinate</H3>
<PRE>
public final double <B>getOrdinate</B>(int&nbsp;dimension)
                         throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></PRE>
<DL>
<DD>Returns the ordinate at the specified dimension.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>getOrdinate</CODE> in interface <CODE>DirectPosition</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>dimension</CODE> - The dimension in the range 0 to 1 inclusive.
<DT><B>Returns:</B><DD>The coordinate at the specified dimension.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if the specified dimension is out of bounds.</DL>
</DD>
</DL>
<HR>

<A NAME="setOrdinate(int, double)"><!-- --></A><H3>
setOrdinate</H3>
<PRE>
public final void <B>setOrdinate</B>(int&nbsp;dimension,
                              double&nbsp;value)
                       throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></PRE>
<DL>
<DD>Sets the ordinate value along the specified dimension.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>setOrdinate</CODE> in interface <CODE>DirectPosition</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>dimension</CODE> - the dimension for the ordinate of interest.<DD><CODE>value</CODE> - the ordinate value of interest.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if the specified dimension is out of bounds.</DL>
</DD>
</DL>
<HR>

<A NAME="setLocation(org.opengis.spatialschema.geometry.DirectPosition)"><!-- --></A><H3>
setLocation</H3>
<PRE>
public void <B>setLocation</B>(DirectPosition&nbsp;position)
                 throws MismatchedDimensionException</PRE>
<DL>
<DD>Set this coordinate to the specified direct position. If the specified position
 contains a coordinate reference system,
 then the CRS for this position will be set to the CRS of the specified position.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>position</CODE> - The new position for this point.
<DT><B>Throws:</B>
<DD><CODE>MismatchedDimensionException</CODE> - if this point doesn't have the expected dimension.</DL>
</DD>
</DL>
<HR>

<A NAME="toPoint2D()"><!-- --></A><H3>
toPoint2D</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/geom/Point2D.html" title="class or interface in java.awt.geom">Point2D</A> <B>toPoint2D</B>()</PRE>
<DL>
<DD>Returns a <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/geom/Point2D.html" title="class or interface in java.awt.geom"><CODE>Point2D</CODE></A> with the same coordinate as this direct position.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public <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>toString</B>()</PRE>
<DL>
<DD>Returns a string representation of this coordinate. The default implementation formats
 this coordinate using a shared instance of <A HREF="../../../org/geotools/measure/CoordinateFormat.html" title="class in org.geotools.measure"><CODE>CoordinateFormat</CODE></A>.
 This is okay for occasional formatting (for example for debugging purpose). But if there
 is a lot of positions to format, users will get better performance and more control by
 using their own instance of <A HREF="../../../org/geotools/measure/CoordinateFormat.html" title="class in org.geotools.measure"><CODE>CoordinateFormat</CODE></A>.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="hashCode()"><!-- --></A><H3>
hashCode</H3>
<PRE>
public int <B>hashCode</B>()</PRE>
<DL>
<DD>Returns a hash value for this coordinate. This value need not remain consistent between
 different implementations of the same class.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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