NAME
m.proj - Calculates conversion coordinates for geographic positions.
(GRASS Map Development Program)
SYNOPSIS
m.proj
m.proj help
DESCRIPTION
This program allows a user to interactively:
convert coordinates from one projection to
another
- It allows a user to do all of the above:
- reading from a file, writing to the screen, or
- reading from the keyboard, writing to a file, or
- reading from a file, writing to a file,
Note: The program does not transform GRASS files, it is
designed to determine coordinate values on an
individual position.
The map projections currently supported are listed in etc/projections file
Each of the above projections (with the exception of
State Plane) can be computed with the spheroids listed in etc/ellipse.table
file
INPUT FILE FORMAT
- When reading from a file of LATITUDE/LONGITUDE data the
file will contain three (2) columns of information:
- the first column - latitude - in degrees minutes seconds,
- the second column - longitude - in degrees minutes seconds,
For example:
+40 36 31.4563 -87 2 7.8193
40n 36 31.4563 87w 2 7.8193
- When reading from a file of PROJECTION COORDINATES data the
file will contain three (2) columns of information:
- the first column - easting - ground coordinates
- the second column - northing - ground coordinates
For example:
500000.00 4496918.64
-424489.11 1908736.13
Note: NO column headings are required, just the numbers.
AUTHORS
Irina Kosinovsky, US Army CERL
R.L. Glenn, USDA, SCS, NHQ-CGIS