Provided by: grass-doc_6.4.3-3_all 
NAME
r.info - Output basic information about a raster map layer.
KEYWORDS
raster, metadata
SYNOPSIS
r.info
r.info help
r.info [-rstghudmp] map=name [--verbose] [--quiet]
Flags:
-r
Print range only
-s
Print raster map resolution (NS-res, EW-res) only
-t
Print raster map type only
-g
Print map region only
-h
Print raster history instead of info
-u
Print raster map data units only
-d
Print raster map vertical datum only
-m
Print map title only
-p
Print raster map timestamp (day.month.year hour:minute:seconds) only
--verbose
Verbose module output
--quiet
Quiet module output
Parameters:
map=name
Name of input raster map
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, the timestamp 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.
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
NOTES
On large maps, the total number of cells in the map may not be displayed with an accurate
number. This is only cosmetic.
Some standards (ISO-C90) and compilers do not support the 'long long' type as a 64-bit
type. In the case that GRASS was built with such a compiler, an accuracy message may be
displayed in the output of r.info after Total Cells:
EXAMPLES
Below is a full report produced by r.info for the raster map slope in the Spearfish sample
data base:
+----------------------------------------------------------------------------+
| Layer: slope Date: Mon Nov 5 10:55:57 2001 |
| Mapset: PERMANENT Login of Creator: neteler |
| Location: spearfish60 |
| DataBase: /home/neteler/grassdaten |
| Title: slope in degrees ( slope ) |
| Timestamp: 20 Mar 1984 10:30 -0600 / 21 Mar 2020 10:30 -0600 |
|----------------------------------------------------------------------------|
| |
| Type of Map: raster Number of Categories: 255 |
| Data Type: FCELL |
| Rows: 477 |
| Columns: 634 |
| Total Cells: 302418 |
| Projection: UTM (zone 13) |
| N: 4928010 S: 4913700 Res: 30 |
| E: 609000 W: 589980 Res: 30 |
| Range of data: min = 0.000000 max = 52.520164 |
| |
| Data Source: |
| raster elevation file elevation.dem |
| |
| |
| Data Description: |
| generated by r.slope.aspect |
| |
| Comments: |
| slope map elev = elevation.dem |
| zfactor = 1.00 format = degrees |
| min_slp_allowed = 0.000000 |
| |
+----------------------------------------------------------------------------+
Alternatively, the output from r.info may be confined to a more terse subset of the
available information by passing various flags to the module:
r.info -rst slope
min=0.000000
max=52.520164
nsres=30
ewres=30
datatype=FCELL
r.info -g slope
north=4928030
south=4913690
east=609000
west=589980
SEE ALSO
g.mapsets, r.coin, r.describe, r.report, r.stats, r.support, r.univar, r.what
AUTHOR
Michael O'Shea, U.S. Army Construction Engineering Research Laboratory
Last changed: $Date: 2008-05-20 11:26:19 -0700 (Tue, 20 May 2008) $
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