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NAME

       r.info  - Outputs basic information about a raster map.

KEYWORDS

       raster, metadata, extent, history

SYNOPSIS

       r.info
       r.info --help
       r.info [-grseh] map=name  [--help]  [--verbose]  [--quiet]  [--ui]

   Flags:
       -g
           Print raster array information in shell script style

       -r
           Print range in shell script style

       -s
           Print stats in shell script style

       -e
           Print extended metadata information in shell script style

       -h
           Print raster history instead of info

       --help
           Print usage summary

       --verbose
           Verbose module output

       --quiet
           Quiet module output

       --ui
           Force launching GUI dialog

   Parameters:
       map=name [required]
           Name of 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.txt by typing:
       r.info map=soils > soil.txt

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 GIS 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 North Carolina
       sample data base:
       r.info slope
        +----------------------------------------------------------------------------+
        | Map:      slope                          Date: Tue Nov  7 01:11:23 2006    |
        | Mapset:   PERMANENT                      Login of Creator: helena          |
        | Location: nc_spm_08_grass7                                                 |
        | DataBase: /grassdata                                                       |
        | Title:    South-West Wake county: slope in degrees ( slope_ned10m )        |
        | Timestamp: none                                                            |
        |----------------------------------------------------------------------------|
        |                                                                            |
        |   Type of Map:  raster               Number of Categories: 255             |
        |   Data Type:    FCELL                                                      |
        |   Rows:         1350                                                       |
        |   Columns:      1500                                                       |
        |   Total Cells:  2025000                                                    |
        |        Projection: Lambert Conformal Conic                                 |
        |            N:     228500    S:     215000   Res:    10                     |
        |            E:     645000    W:     630000   Res:    10                     |
        |   Range of data:    min = 0  max = 38.68939                                |
        |                                                                            |
        |   Data Source:                                                             |
        |    raster elevation file elev_ned10m                                       |
        |                                                                            |
        |                                                                            |
        |   Data Description:                                                        |
        |    generated by r.slope.aspect                                             |
        |                                                                            |
        |   Comments:                                                                |
        |    slope map elev = elev_ned10m                                            |
        |    zfactor = 1.00 format = degrees                                         |
        |    min_slope = 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:

       Output in shell script style, useful for eval (eval `r.info -g slope`):
       r.info -g slope
       north=228500
       south=215000
       east=645000
       west=630000
       nsres=10
       ewres=10
       rows=1350
       cols=1500
       cells=2025000
       datatype=FCELL
       ncats=255

       Output the map data range:
       r.info -r slope
       min=0
       max=38.68939

       Output the extended map data metadata in shell style:
       r.info -e slope
       map=slope
       mapset=PERMANENT
       location=nc_spm_08_grass7
       database=/grassdata
       date="Tue Nov  7 01:11:23 2006"
       creator="helena"
       title="South-West Wake county: slope in degrees (slope_ned10m)"
       timestamp="none"
       units="none"
       vdatum="none"
       source1="raster elevation file elev_ned10m"
       source2=""
       description="generated by r.slope.aspect"
       comments="slope map elev = elev_ned10mzfactor = 1.00 format = degreesmin_slp_allowed = 0.000000"

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: 2014-11-26 17:43:10 +0100 (Wed, 26 Nov 2014) $

SOURCE CODE

       Available at: r.info source code (history)

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       © 2003-2019 GRASS Development Team, GRASS GIS 7.6.0 Reference Manual