Table of Contents
.SH NAME
projection \- Create and manipulate projection objects
.SH SYNOPSIS
\fB projection \fItype\fR ?\fIparameters\fR?
.PP
.SH DESCRIPTION
.PP
coordinates (latitude and longitude) into map projection coodrinates.
.PP
\fBprojection\fR command takes list of options and
returns name of newly created projection object.
(see \fBPROJECTION SUBCOMMANDS\fR below) used for manipulation
of projections.
.SH PROJECTION TYPES
following types of projections:
\» list should be here
.SH PROJECTION OPTIONS
\» list should be here
.SH PROJECTION SUBCOMMANDS
.TP 8
\fIprojName \fBforward\fI long lat\fR
recieves two arguments - geographic longitude and latitude as degrees in
decimal format and returs list of two double values representing map
coordinates in meters.
.TP 8
\fIprojName \fBbackward\fI X Y \fR
performs backword transformation - given map coordinates in meters
returns longitude and latitude in decimal degrees,
.TP 8
\fIprojName \fBformat\fI X Y\fR ?\fB-format\fI formatString\fR
can contain following escapes sequences:
.RS
.TP
\fB%lt\fR
unsigned latitude in DDMMSS format
.TP
\fB%lg\fR
unsigned longitude in DDMMSS format
.TP
\fB%-t\fR \fB%-g\fR
optionally signed latitude and longitude in DDMMSS format
.TP
\fB%+t\fR \fB%+g\fR
explicitely signed latitude and longitude in DDMMSS format
.TP
\fB%lG %lT %-G %-T %+G %+T\fR
same as above, but in decimal fractions of degree
.TP
\fB%dl %dg\fR
direction indicator - letters N and S for latitude and E and W for
longitude (or some other national language values as defined in fgis.rc
file).
.RE
.TP 8
\fIprojName\fB dump\fR
returns argumets for projection command used to create this projection
object.
.TP 8
\fIprojName\fB delete\fR
destroys projection object.
.SH «SEE ALSO"
.BR proj «(1), « pj_init «(3), « transform (1)
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