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diff --git a/html/man_pj_init.html b/html/man_pj_init.html deleted file mode 100644 index 25889942..00000000 --- a/html/man_pj_init.html +++ /dev/null @@ -1,157 +0,0 @@ -<HTML><HEAD><TITLE>Manpage of PJ_INIT</TITLE> -</HEAD><BODY> -<H1>PJ_INIT</H1> -Section: Misc. Reference Manual Pages (3U)<BR>Updated: 2001/04/05 Rel. 4.4<BR><A HREF="#index">Index</A> -<A HREF="../index.html">Return to Main Contents</A><HR> - - - -<A NAME="lbAB"> </A> -<H2>NAME</H2> - -pj_init - initialize cartographic projection -<BR> - -pj_init_plus - initialize cartographic projection -<BR> - -pj_fwd - forward cartographic projection -<BR> - -pj_inv - inverse cartographic projection -<BR> - -pj_transform - transform between coordinate systems -<BR> - -pj_free - de-initialize projection -<A NAME="lbAC"> </A> -<H2>SYNOPSIS</H2> - -<PRE> -#include <<A HREF="file:/usr/include/proj_api.h">proj_api.h</A>> - -projPJ pj_init(int argc, char **argv) - -projPJ pj_init_plus(const char *defn) - -projUV pj_fwd(projUV val, projPJ proj) - -projUV pj_inv(projUV val, projPJ proj) - -int pj_transform(projPJ src_cs, projPJ dst_cs, long point_count, - double *x, double *y, double *z) - -void pj_free(projPJ proj) - -</PRE><A NAME="lbAD"> </A> -<H2>DESCRIPTION</H2> - -Procedure <B>pj_init</B> selects and initializes a cartographic projection -with its argument control parameters. -<B>Argc</B> is the number of elements in the array of control strings -<B>argv</B> that each contain individual cartographic control keyword -assignments (<TT>+</TT> <B>proj</B> arguments). -The list must contain at least the <B>proj=</B><I>projection</I> and -Earth's radius or elliptical parameters. -If the initialization of the projection is successful a valid -address is returned otherwise a NULL value. -<P> -The <B>pj_init_plus</B> function operates similarly to <B>pj_init</B> but -takes a single string containing the definition, with each parameter -prefixed with a plus sign. For example "+proj=utm +zone=11 +ellps=WGS84". -<P> -Once initialization is performed either forward or inverse -projections can be performed with the returned value of <B>pj_init</B> -used as the argument <B>proj</B>. -The argument structure <B>projUV</B> values <B>u</B> and <B>v</B> contain -respective longitude and latitude or x and y. -Latitude and longitude are in radians. -If a projection operation fails, both elements of <B>projUV</B> are -set to HUGE_VAL (defined in <I>math.h</I>). -<P> -<B>Note:</B> all projections have a forward mode, but some do not have -an inverse projection. -If the projection does not have an inverse the projPJ structure element -<I>inv</I> will be NULL. -<P> -The <B>pj_transform</B> function may be used to transform points between -the two provided coordinate systems. In addition to converting between -cartographic projection coordinates and geographic coordinates, this function -also takes care of datum shifts if possible between the source and destination -coordinate system. Unlike <B>pj_fwd</B> and <B>pj_inv</B> it is also allowable -for the coordinate system definitions (<B>PJ *</B>) to be geographic coordinate -systems (defined as +proj=latlong). The <B>x</B>, <B>y</B> and <B>z</B> arrays -contain the input values of the points, and are replaced with the output -values. The function returns zero on success, or the error number (also in -pj_errno) on failure. -<P> -Memory associated with the projection may be freed with <B>pj_free</B>. -<A NAME="lbAE"> </A> -<H2>EXAMPLE</H2> - -The following program reads latitude and longitude values in decimal -degrees, performs Mercator projection with a Clarke 1866 ellipsoid and -a 33° latitude of true scale and prints the projected -cartesian values in meters: -<PRE> -<TT> -#include <<A HREF="file:/usr/include/proj_api.h">proj_api.h</A>> - -main(int argc, char **argv) { - char *args[] = { "proj=merc", "ellps=clrk66", "lat_ts=33" }; - projUV p; - projPJ pj; - - if (!(pj = pj_init(3, args))) - <A HREF="../man1/exit.1.html">exit</A>(1); - while (scanf("%lf %lf", &p.v, &p.u) == 2) { - p.u *= DEG_TO_RAD; - p.v *= DEG_TO_RAD; - p = pj_fwd(p, pj); - printf("%.2f\t%.2f\n", p.u, p.v); - } - exit(0); -} </TT> -<BR> -</PRE> - -<A NAME="lbAF"> </A> -<H2>LIBRARY</H2> - -libproj.a - library of projections and support procedures -<A NAME="lbAG"> </A> -<H2>SEE ALSO</H2> - -<B><A HREF="../man1U/proj.1U.html">proj</A>(1U),</B> - -<BR> - -<I>Cartographic Projection Procedures for the UNIX Environment---A User's Manual,</I> - -(Evenden, 1990, Open-file report 90-284). -<A NAME="lbAH"> </A> -<H2>HOME PAGE</H2> - -<A HREF="http://www.remotesensing.org/proj">http://www.remotesensing.org/proj</A> -<P> -<P> - -<HR> -<A NAME="index"> </A><H2>Index</H2> -<DL> -<DT><A HREF="#lbAB">NAME</A><DD> -<DT><A HREF="#lbAC">SYNOPSIS</A><DD> -<DT><A HREF="#lbAD">DESCRIPTION</A><DD> -<DT><A HREF="#lbAE">EXAMPLE</A><DD> -<DT><A HREF="#lbAF">LIBRARY</A><DD> -<DT><A HREF="#lbAG">SEE ALSO</A><DD> -<DT><A HREF="#lbAH">HOME PAGE</A><DD> -</DL> -<HR> -This document was created by -<A HREF="http://localhost/cgi-bin/man/man2html">man2html</A>, -using the manual pages.<BR> -Time: 13:14:22 GMT, October 14, 2005 -</BODY> -</HTML> |