v.in.gshhs
NAME
v.in.gshhs - import Global Self-consistant Hierarchical High-resolution Shoreline (GSHHS) data
(GRASS Vector Import Program)
SYNOPSIS
v.in.gshhs [-g] [-s] [-a] input=name output=name [n=value] [s=value] [e=value] [w=value]
DESCRIPTION
The v.in.gshhs program imports Global
Self-consistant Hierarchical High-resolution Shoreline (GSHHS) data
available from http://www.soest.hawaii.edu/wessel/gshhs/gshhs.html.
Coordinates are originally lat/long and, if required, reprojected during
import to the current GRASS projection. The user may supply bounding
coordinates by manually entering north, south, east, and west values, or
optionally using the "-g" flag to use the current GRASS region as the
bounding coordinates.
Flags:
- -g
- Obtain north, south, east, and west bounding coordinates from the current GRASS region
- -s
- Automatically run v.support after import
- -a
- Import vector data as area-line type (default is line)
Parameters:
- input
- The name of the GSHHS shoreline file
- There are five files (resolutions) available: crude, low, intermediate, high, and full
- output
- The name of the GRASS vector file to be created
- n
- North limit for imported vector
- n
- North limit for imported vector
- s
- South limit for imported vector
- e
- East limit for imported vector
- w
- West limit for imported vector
NOTES
Imported vector data is assigned labels (eg.land, lake, etc) derived from GSHHS data. Solid lines that exit and re-enter the import area are broken at the point of exit.
EXAMPLE
The following example imports an intermediate resolution shoreline into GRASS using the current GRASS region and automatically runs v.support after import:
v.in.gshhs -gs input=gshhs_i.b output=shoreline.int
AUTHORS
This program is based on gshhstograss
Author: Simon Cox
Author: Paul Wessel
Author: Bob Covill
Last changed: $Date$