NAME
r.in.ppm - Converts a PPM image file to a GRASS raster file.
(GRASS Raster Data Import Program)
SYNOPSIS
r.in.ppm [-vfbc] input=name output=name
DESCRIPTION
This program converts a PPM raster file to a GRASS raster file.
OPTIONS
Flags:
- -v
- Verbose mode.
- -f
- Create floating-point maps (range 0.0 - 1.0). Not applicable to
composite maps created by the -c flag.
- -b
- Create 3 separate raster maps of the red/green/blue levels
- -c
- Create a composite color map
Parameters:
- input=name
- Name of an existing PPM raster file to be imported.
- output=name
- Name to be assigned to resultant raster map layer(s).
NOTES
R/G/B levels: each output raster map layer is given a linear gray
scale color table. Each output raster map layer is assigned the
user-specified output name with (.r, .g, .b) suffix.
The user should adjust boundary coordinates stored in the cell header
after import using r.support or r.region.
Composite color maps are generated by generating the separate red,
green and blue maps, then invoking
r.composite
to generate the composite map. Unless the -b flag was used, the
red, green and blue maps will then be deleted.
Greate control may be exercised over the creation of composite color
maps by invoking r.composite
manually.
SEE ALSO
r.in.pbm
r.in.pbm
r.composite
r.support
r.region
parser
AUTHOR
Glynn Clements
Last changed: $Date$