defaultprimemeridian.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

 unchanged to the <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#AbstractIdentifiedObject(java.util.Map)">super-class constructor</A>.
<P>
<DT><B>Parameters:</B><DD><CODE>properties</CODE> - Set of properties. Should contains at least <code>"name"</code>.<DD><CODE>greenwichLongitude</CODE> - The longitude value relative to the Greenwich Meridian.<DD><CODE>angularUnit</CODE> - The angular unit of the longitude.</DL>

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<A NAME="getGreenwichLongitude()"><!-- --></A><H3>
getGreenwichLongitude</H3>
<PRE>
public double <B>getGreenwichLongitude</B>()</PRE>
<DL>
<DD>Longitude of the prime meridian measured from the Greenwich meridian, positive eastward.
 The  initial value is zero, and that value shall be used
 when the <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#getName()">meridian name</A> value is "Greenwich".
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>getGreenwichLongitude</CODE> in interface <CODE>PrimeMeridian</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The prime meridian Greenwich longitude, in <A HREF="../../../../org/geotools/referencing/datum/DefaultPrimeMeridian.html#getAngularUnit()">angular unit</A>.</DL>
</DD>
</DL>
<HR>

<A NAME="getGreenwichLongitude(javax.units.Unit)"><!-- --></A><H3>
getGreenwichLongitude</H3>
<PRE>
public double <B>getGreenwichLongitude</B>(<A HREF="http://jsr-108.sourceforge.net/javadoc/javax/units/Unit.html" title="class or interface in javax.units">Unit</A>&nbsp;targetUnit)</PRE>
<DL>
<DD>Returns the longitude value relative to the Greenwich Meridian, expressed in the specified
 units. This convenience method makes it easier to obtain longitude in decimal degrees
 (), regardless of the underlying
 angular units of this prime meridian.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>targetUnit</CODE> - The unit in which to express longitude.</DL>
</DD>
</DL>
<HR>

<A NAME="getAngularUnit()"><!-- --></A><H3>
getAngularUnit</H3>
<PRE>
public <A HREF="http://jsr-108.sourceforge.net/javadoc/javax/units/Unit.html" title="class or interface in javax.units">Unit</A> <B>getAngularUnit</B>()</PRE>
<DL>
<DD>Returns the angular unit of the <A HREF="../../../../org/geotools/referencing/datum/DefaultPrimeMeridian.html#getGreenwichLongitude()">Greenwich longitude</A>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>getAngularUnit</CODE> in interface <CODE>PrimeMeridian</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="equals(org.geotools.referencing.AbstractIdentifiedObject, boolean)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(<A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html" title="class in org.geotools.referencing">AbstractIdentifiedObject</A>&nbsp;object,
                      boolean&nbsp;compareMetadata)</PRE>
<DL>
<DD>Compare this prime meridian with the specified object for equality.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#equals(org.geotools.referencing.AbstractIdentifiedObject, boolean)">equals</A></CODE> in class <CODE><A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html" title="class in org.geotools.referencing">AbstractIdentifiedObject</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>object</CODE> - The object to compare to .<DD><CODE>compareMetadata</CODE> -  for performing a strict comparaison, or
          for comparing only properties relevant to transformations.
<DT><B>Returns:</B><DD> if both objects are equal.</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 prime meridian. <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#getName()">Name</A>,
 <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#getRemarks()">remarks</A> and the like are not taken in account.
 In other words, two prime meridians will return the same hash value if
 they are equal in the sense of
 <code><A HREF="../../../../org/geotools/referencing/datum/DefaultPrimeMeridian.html#equals(org.geotools.referencing.AbstractIdentifiedObject, boolean)"><CODE>equals</CODE></A>(AbstractIdentifiedObject, <strong>false</strong>)</code>.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#hashCode()">hashCode</A></CODE> in class <CODE><A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html" title="class in org.geotools.referencing">AbstractIdentifiedObject</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The hash code value. This value doesn't need to be the same
         in past or future versions of this class.</DL>
</DD>
</DL>
<HR>

<A NAME="formatWKT(org.geotools.referencing.wkt.Formatter)"><!-- --></A><H3>
formatWKT</H3>
<PRE>
protected <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>formatWKT</B>(<A HREF="../../../../org/geotools/referencing/wkt/Formatter.html" title="class in org.geotools.referencing.wkt">Formatter</A>&nbsp;formatter)</PRE>
<DL>
<DD>Format the inner part of a
 <A HREF="http://geoapi.sourceforge.net/snapshot/javadoc/org/opengis/referencing/doc-files/WKT.html"><cite>Well
 Known Text</cite> (WKT)</A> element.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/geotools/referencing/wkt/Formattable.html#formatWKT(org.geotools.referencing.wkt.Formatter)">formatWKT</A></CODE> in class <CODE><A HREF="../../../../org/geotools/referencing/wkt/Formattable.html" title="class in org.geotools.referencing.wkt">Formattable</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>formatter</CODE> - The formatter to use.
<DT><B>Returns:</B><DD>The WKT element name, which is "PRIMEM"<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/referencing/wkt/Formattable.html#toWKT()"><CODE>Formattable.toWKT()</CODE></A>, 
<A HREF="../../../../org/geotools/referencing/wkt/Formattable.html#toString()"><CODE>Formattable.toString()</CODE></A></DL>
</DD>
</DL>
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