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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 11:36:21 GMT-05:00 2007 --><META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><TITLE>Krovak (Geotools 2.3.x 2.3.2 API)</TITLE><META NAME="keywords" CONTENT="org.geotools.referencing.operation.projection.Krovak class"><META NAME="keywords" CONTENT="azimuth"><META NAME="keywords" CONTENT="pseudoStandardParallel"><META NAME="keywords" CONTENT="getParameterDescriptors()"><META NAME="keywords" CONTENT="getParameterValues()"><META NAME="keywords" CONTENT="transformNormalized()"><META NAME="keywords" CONTENT="inverseTransformNormalized()"><META NAME="keywords" CONTENT="hashCode()"><META NAME="keywords" CONTENT="equals()"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="Krovak (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/Krovak.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/operation/projection/EquidistantCylindrical.Provider.html" title="class in org.geotools.referencing.operation.projection"><B>PREV CLASS</B></A> <A HREF="../../../../../org/geotools/referencing/operation/projection/Krovak.Provider.html" title="class in org.geotools.referencing.operation.projection"><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="Krovak.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: <A HREF="#nested_class_summary">NESTED</A> | <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.operation.projection</FONT><BR>Class Krovak</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/operation/transform/AbstractMathTransform.html" title="class in org.geotools.referencing.operation.transform">AbstractMathTransform</A> <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../../../org/geotools/referencing/operation/projection/MapProjection.html" title="class in org.geotools.referencing.operation.projection">MapProjection</A> <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by"><B>Krovak</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>MathTransform, MathTransform2D, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/Serializable.html" title="class or interface in java.io">Serializable</A></DD></DL><HR><DL><DT>public class <B>Krovak</B><DT>extends <A HREF="../../../../../org/geotools/referencing/operation/projection/MapProjection.html" title="class in org.geotools.referencing.operation.projection">MapProjection</A></DL><P>Krovak Oblique Conformal Conic projection (EPSG code 9819). This projection is used in the Czech Republic and Slovakia under the name 'Krovak' projection. The geographic coordinates on the ellipsoid are first reduced to conformal coordinates on the conformal (Gaussian) sphere. These spherical coordinates are then projected onto the oblique cone and converted to grid coordinates. The pseudo standard parallel is defined on the conformal sphere after its rotation, to obtain the oblique aspect of the projection. It is then the parallel on this sphere at which the map projection is true to scale; on the ellipsoid it maps as a complex curve. <p>The compulsory parameters are just the ellipsoid characteristics. All other parameters are optional and have defaults to match the common usage with Krovak projection.</p> <p>In general the axis of Krovak projection are defined as westing and southing (not easting and northing) and they are also reverted, so if the value of projected coordinates should (and in <var>y</var>, <var>x</var> order in Krovak) be positive the 'Axis' parameter for projection should be defined explicitly like this (in wkt):</p> <pre>PROJCS["S-JTSK (Ferro) / Krovak", . . . PROJECTION["Krovak"] PARAMETER["semi_major", 6377397.155], PARAMETER["semi_minor", 6356078.963], UNIT["meter",1.0], AXIS["x", WEST], AXIS["y", SOUTH]] </pre>Axis in Krovak: <pre> y<------------------+ | Czech. Rep. | | x </pre> <p>By default, the axis are 'easting, northing' so the values of projected coordinates are negative (and in <var>y</var>, <var>x</var> order in Krovak - it is cold Krovak GIS version).</p> <p><strong>References:</strong> <ul> <li>Proj-4.4.7 available at <A HREF="http://www.remotesensing.org/proj">www.remotesensing.org/proj</A><br> Relevant files is: </li> <li>"Coordinate Conversions and Transformations including Formulas" available at, <A HREF="http://www.remotesensing.org/geotiff/proj_list/guid7.html">http://www.remotesensing.org/geotiff/proj_list/guid7.html</A></li> </ul> </p><P><P><DL><DT><B>Since:</B></DT> <DD>2.4</DD><DT><B>Author:</B></DT> <DD>Jan Jezek, Martin Desruisseaux</DD><DT><B>See Also:</B><DD><A HREF="http://www.remotesensing.org/geotiff/proj_list/krovak.html">Krovak on RemoteSensing.org </A>, <A HREF="http://www.remotesensing.org/geotiff/proj_list/guid7.html">Krovak on "Coordinate Conversions and Transformations including Formulas"</A>, <A HREF="http://www.posc.org/Epicentre.2_2/DataModel/ExamplesofUsage/eu_cs34e2.html">Krovak on POSC</A>, <A HREF="../../../../../serialized-form.html#org.geotools.referencing.operation.projection.Krovak">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/operation/projection/Krovak.java">SVN head</A>)</DD></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><A NAME="nested_class_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Nested Class Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static class</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/geotools/referencing/operation/projection/Krovak.Provider.html" title="class in org.geotools.referencing.operation.projection">Krovak.Provider</A></B></CODE><BR> The <A HREF="../../../../../org/geotools/referencing/operation/MathTransformProvider.html" title="class in org.geotools.referencing.operation"><CODE>MathTransformProvider</CODE></A> for an <A HREF="../../../../../org/geotools/referencing/operation/projection/Krovak.html" title="class in org.geotools.referencing.operation.projection"><CODE>krovak</CODE></A> projection.</TD></TR></TABLE> <A NAME="nested_classes_inherited_from_class_org.geotools.referencing.operation.projection.MapProjection"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Nested classes inherited from class <A HREF="../../../../../org/geotools/referencing/operation/projection/MapProjection.html" title="class in org.geotools.referencing.operation.projection">MapProjection</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../../org/geotools/referencing/operation/projection/MapProjection.AbstractProvider.html" title="class in org.geotools.referencing.operation.projection">MapProjection.AbstractProvider</A></CODE></TD></TR></TABLE> <!-- =========== FIELD SUMMARY =========== -->⌨️ 快捷键说明
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