NAME
r.info - Outputs basic information about a
user-specified raster map layer.
(GRASS Raster Program)
SYNOPSIS
r.info
r.info help
r.info [-rst] map=name
DESCRIPTION
r.info reports some basic information about a
user-specified raster map layer. This map layer must exist
in the user's current mapset search path. Information
about the map's boundaries, resolution, projection, data
type, category number, data base location and mapset, and
history are put into a table and written to standard
output. The types of information listed can also be found
in the cats, cellhd, and hist
directories under the mapset in which the named map is
stored.
OPTIONS
Flags:
- -r
- print range only and exit
- -s
- print resolution (NS-res, EW-res) only.
- -t
- print raster map type only.
Parameters:
- map=name
- name of an existing raster map layer
The program will be run non-interactively if the user specifies
the name of a raster map layer on the command line, using the form:
-
r.info map=name
where name is the name of a raster map layer on which the user
seeks information. The user can save the tabular output to a file
by using the UNIX redirection mechanism (>); for example, the user
might save a report on the soils map layer in a file called
soil.rpt by typing:
-
r.info map=soils > soil.rpt
Alternately, the user can simply type r.info on the
command line, without program arguments. In this case, the
user will be prompted for the name of a raster map layer
using the standard GRASS
parser interface.
The user is asked whether he wishes to print the report and/or save
it in a file. If saved, the report is stored in a
user-named file in the user's home directory.
Below is the report produced by r.info for the raster map
geology in the Spearfish sample data base.
|------------------------------------------------------------|
| Layer: geology Date: Mon May 4 10:00:14 1987 : |
| Location: spearfish Login of Creator: grass |
| Mapset: PERMANENT |
| Title: Geology |
|------------------------------------------------------------|
| |
| Type of Map: raster Number of Categories: 9 |
| Rows: 140 |
| Columns: 190 |
| Total Cells: 26600 |
| |
| Projection: UTM (zone 13) |
| N: 4928000.00 S: 4914000.00 Res: 100.00 |
| E: 609000.00 W: 590000.00 Res: 100.00 |
| |
| Data Source: |
| Raster file produced by EROS Data Center |
| |
| |
| Data Description: |
| Shows the geology for the map area |
| |
| Comments: |
| |
|------------------------------------------------------------|
SEE ALSO
g.mapsets,
r.coin,
r.describe,
r.report,
r.stats,
r.support,
r.what,
and
parser
AUTHOR
Michael O'Shea,
U.S. Army Construction Engineering
Research Laboratory
Last changed: $Date: 2004/08/03 14:39:58 $