Flags:

-1

Print the output one value per line

-r

Only print the range of the data

-n

Suppress reporting of any NULLs

-d

Use the current region

-i

Read floating-point map as integer

--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

null_value=string

String representing NULL value
Default: *

nsteps=integer

Number of quantization steps
Default: 255

FLAGS

If the user selects the -r flag, a range of category values found in the raster map layer will be printed. The range is divided into three groups: negative, positive, and zero. If negative values occur, the minimum and maximum negative values will be printed. If positive values occur, the minimum and maximum positive values will be printed. If zero occurs, this will be indicated. The range report will generally run faster than the full list (the default output).

The -d flag can be used to force r.describe to respect the current region extents when repoting raster map categories. The default behavior is to read the full extent of the input raster map.

If the -1 flag is specified, the output appears with one category value/range per line.

The -n flag suppresses the reporting of NULL values.

Print the full list of raster map categories

r.describe landcover.30m
* 11 21-23 31 32 41-43 51 71 81-83 85 91 92

Print the raster range only

r.describe -r landcover.30m
11 thru 92
*

Print raster map category range, suppressing nulls

r.describe -n landcover.30m
11 21-23 31 32 41-43 51 71 81-83 85 91 92

Print raster map categories, one category per line

r.describe -1 geology
*
1
2
3
4
5
6
7
8
9