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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.4.2_13) on Tue Jun 05 11:36:19 GMT-05:00 2007 --><META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><TITLE>AbstractSingleCRS (Geotools 2.3.x 2.3.2 API)</TITLE><META NAME="keywords" CONTENT="org.geotools.referencing.crs.AbstractSingleCRS class"><META NAME="keywords" CONTENT="datum"><META NAME="keywords" CONTENT="getDatum()"><META NAME="keywords" CONTENT="getDimension()"><META NAME="keywords" CONTENT="getAxis()"><META NAME="keywords" CONTENT="equals()"><META NAME="keywords" CONTENT="hashCode()"><META NAME="keywords" CONTENT="formatWKT()"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="AbstractSingleCRS (Geotools 2.3.x 2.3.2 API)";}</SCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/AbstractSingleCRS.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../org/geotools/referencing/crs/AbstractDerivedCRS.html" title="class in org.geotools.referencing.crs"><B>PREV CLASS</B></A> <A HREF="../../../../org/geotools/referencing/crs/AUTOCRSAuthorityFactory.html" title="class in org.geotools.referencing.crs"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="AbstractSingleCRS.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.geotools.referencing.crs</FONT><BR>Class AbstractSingleCRS</H2><PRE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../../org/geotools/referencing/wkt/Formattable.html" title="class in org.geotools.referencing.wkt">Formattable</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html" title="class in org.geotools.referencing">AbstractIdentifiedObject</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../../org/geotools/referencing/AbstractReferenceSystem.html" title="class in org.geotools.referencing">AbstractReferenceSystem</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../../org/geotools/referencing/crs/AbstractCRS.html" title="class in org.geotools.referencing.crs">AbstractCRS</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><B>AbstractSingleCRS</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>CoordinateReferenceSystem, IdentifiedObject, ReferenceSystem, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/Serializable.html" title="class or interface in java.io">Serializable</A>, SingleCRS</DD></DL><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../org/geotools/referencing/crs/AbstractDerivedCRS.html" title="class in org.geotools.referencing.crs">AbstractDerivedCRS</A>, <A HREF="../../../../org/geotools/referencing/crs/DefaultEngineeringCRS.html" title="class in org.geotools.referencing.crs">DefaultEngineeringCRS</A>, <A HREF="../../../../org/geotools/referencing/crs/DefaultGeocentricCRS.html" title="class in org.geotools.referencing.crs">DefaultGeocentricCRS</A>, <A HREF="../../../../org/geotools/referencing/crs/DefaultGeographicCRS.html" title="class in org.geotools.referencing.crs">DefaultGeographicCRS</A>, <A HREF="../../../../org/geotools/referencing/crs/DefaultImageCRS.html" title="class in org.geotools.referencing.crs">DefaultImageCRS</A>, <A HREF="../../../../org/geotools/referencing/crs/DefaultTemporalCRS.html" title="class in org.geotools.referencing.crs">DefaultTemporalCRS</A>, <A HREF="../../../../org/geotools/referencing/crs/DefaultVerticalCRS.html" title="class in org.geotools.referencing.crs">DefaultVerticalCRS</A></DD></DL><HR><DL><DT>public class <B>AbstractSingleCRS</B><DT>extends <A HREF="../../../../org/geotools/referencing/crs/AbstractCRS.html" title="class in org.geotools.referencing.crs">AbstractCRS</A><DT>implements SingleCRS</DL><P>Abstract coordinate reference system, consisting of a single coordinate system and a single datum (as opposed to <A HREF="../../../../org/geotools/referencing/crs/DefaultCompoundCRS.html" title="class in org.geotools.referencing.crs">compound CRS</A>). <p> A coordinate reference system consists of an ordered sequence of coordinate system axes that are related to the earth through a datum. A coordinate reference system is defined by one datum and by one coordinate system. Most coordinate reference system do not move relative to the earth, except for engineering coordinate reference systems defined on moving platforms such as cars, ships, aircraft, and spacecraft. <p> Coordinate reference systems are commonly divided into sub-types. The common classification criterion for sub-typing of coordinate reference systems is the way in which they deal with earth curvature. This has a direct effect on the portion of the earth's surface that can be covered by that type of CRS with an acceptable degree of error. The exception to the rule is the subtype "Temporal" which has been added by analogy. <p> This class is conceptually <cite>abstract</cite>, even if it is technically possible to instantiate it. Typical applications should create instances of the most specific subclass with prefix instead. An exception to this rule may occurs when it is not possible to identify the exact type.<P><P><DL><DT><B>Since:</B></DT> <DD>2.1</DD><DT><B>Author:</B></DT> <DD>Martin Desruisseaux</DD><DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/referencing/cs/AbstractCS.html" title="class in org.geotools.referencing.cs"><CODE>AbstractCS</CODE></A>, <A HREF="../../../../org/geotools/referencing/datum/AbstractDatum.html" title="class in org.geotools.referencing.datum"><CODE>AbstractDatum</CODE></A>, <A HREF="../../../../serialized-form.html#org.geotools.referencing.crs.AbstractSingleCRS">Serialized Form</A><DT><B>Module:</B></DT><DD><CODE><B>module/referencing</B></CODE> (<A HREF="http://maven.geotools.fr/repository/org/geotools/gt2-referencing/"><CODE>gt2-referencing.jar</CODE></A>) (<A HREF="http://maven.geotools.fr/reports/referencing/index.html">Maven report</A>) (<A HREF="http://svn.geotools.org/geotools/tags/2.3.2/module/referencing/src/org/geotools/referencing/crs/AbstractSingleCRS.java">SVN head</A>)</DD></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected Datum</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/referencing/crs/AbstractSingleCRS.html#datum">datum</A></B></CODE><BR> The datum.</TD></TR></TABLE> <A NAME="fields_inherited_from_class_AbstractCRS"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class <A HREF="../../../../org/geotools/referencing/crs/AbstractCRS.html" title="class in org.geotools.referencing.crs">AbstractCRS</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/geotools/referencing/crs/AbstractCRS.html#coordinateSystem">coordinateSystem</A></CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_AbstractIdentifiedObject"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html" title="class in org.geotools.referencing">AbstractIdentifiedObject</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#EMPTY_ALIAS_ARRAY">EMPTY_ALIAS_ARRAY</A>, <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#EMPTY_IDENTIFIER_ARRAY">EMPTY_IDENTIFIER_ARRAY</A>, <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#IDENTIFIER_COMPARATOR">IDENTIFIER_COMPARATOR</A>, <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#NAME_COMPARATOR">NAME_COMPARATOR</A>, <A HREF="../../../../org/geotools/referencing/AbstractIdentifiedObject.html#REMARKS_COMPARATOR">REMARKS_COMPARATOR</A></CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_ReferenceSystem"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from interface ReferenceSystem</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>SCOPE_KEY, VALID_AREA_KEY</CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_IdentifiedObject"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from interface IdentifiedObject</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>ALIAS_KEY, IDENTIFIERS_KEY, NAME_KEY, REMARKS_KEY</CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== -->⌨️ 快捷键说明
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