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=name  [output=name]   [--overwrite]  [--help]  [--verbose]  [--quiet]  [--ui]

   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

       --help
           Print usage summary

       --verbose
           Verbose module output

       --quiet
           Quiet module output

       --ui
           Force launching GUI dialog

   Parameters:
       input=name [required]
           Name of input file in Mapgen/Matlab format

       output=name
           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
       https://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

SOURCE CODE

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

       Accessed: Friday Apr 04 01:21:13 2025

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       © 2003-2025 GRASS Development Team, GRASS GIS 8.4.1 Reference Manual

GRASS 8.4.1                                                                                  v.in.mapgen(1grass)