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v.in.mapgen(1grass) Grass User's Manual v.in.mapgen(1grass)

NAME

v.in.mapgen - Imports Mapgen or Matlab-ASCII vector maps into GRASS.

KEYWORDS

vector, import

SYNOPSIS

v.in.mapgen
 
v.in.mapgen help
 
v.in.mapgen [-fz] input=string [output=string] [-- overwrite] [--verbose] [--quiet]

Flags:

-f
 
Input map is in Matlab format
-z
 
Create a 3D vector points map from 3 column Matlab data
--overwrite
 
Allow output files to overwrite existing files
--verbose
 
Verbose module output
--quiet
 
Quiet module output

Parameters:

input=string
 
Name of input file in Mapgen/Matlab format
output=string
 
Name for output vector map (omit for display to stdout)

DESCRIPTION

v.in.mapgen allows the user to import Mapgen or Matlab vector maps into GRASS.

NOTES

This module only imports data into vector lines.
The user can get coastline data in Mapgen or Matlab format from NOAA's Coastline Extractor at http://www.ngdc.noaa.gov/mgg/shorelines/shorelines.html.
Matlab vector line maps are simply a series of "x y" data points. Lines are separated by a row containing NaN NaN. Output from Matlab with this command:
 
 

save filename.txt arrayname -ASCII
 
The user can import 3D lines from Matlab by exporting a 3 column array and using the -z flag.

SEE ALSO

v.in.ascii

AUTHORS

Based on v.in.mapgen.sh for GRASS 5.0 by Andreas Lange
 
Rewritten for GRASS 6 by Hamish Bowman
Last changed: $Date: 2011-11-08 10:42:51 +0100 (Tue, 08 Nov 2011) $
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