v.in.mapgen.1grass - Man Page

Imports Mapgen or Matlab-ASCII vector maps into GRASS.


vector, import


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



Input map is in Matlab format


Create a 3D vector points map from 3 column Matlab data


Allow output files to overwrite existing files


Print usage summary


Verbose module output


Quiet module output


Force launching GUI dialog


input=name [required]

Name of input file in Mapgen/Matlab format


Name for output vector map (omit for display to stdout)


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


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



Based on v.in.mapgen.sh for GRASS 5.0 by Andreas Lange
Rewritten for GRASS 6 by Hamish Bowman

Source Code

Available at: v.in.mapgen source code (history)

Accessed: Wednesday Nov 15 17:41:23 2023

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