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i.group.1grass - Man Page

Creates, edits, and lists groups of imagery data.


imagery, map management


i.group --help
i.group [-rlsg] group=name  [subgroup=name]   [input=name[,name,...]]   [file=name]   [--help]  [--verbose]  [--quiet]  [--ui]



Remove selected files from specified group or subgroup


List files from specified (sub)group


List subgroups from specified group


Print in shell script style


Print usage summary


Verbose module output


Quiet module output


Force launching GUI dialog


group=name [required]

Name of imagery group


Name of imagery subgroup


Name of raster map(s) to include in group


Input file with one raster map name per line


i.group allows the user to collect raster map layers in an imagery group by assigning them to user-named subgroups or other groups. This enables the user to run analyses on any combination of the raster map layers in a group.  The user creates the groups and subgroups and selects the raster map layers that are to reside in them. Imagery analysis programs like g.gui.gcp, i.rectify, i.ortho.photo and others ask the user for the name of an imagery group whose data are to be analyzed. Imagery analysis programs like i.cluster and i.maxlik ask the user for the imagery group and imagery subgroup whose data are to be analyzed.


The i.group options are only available for imagery map layers in the current LOCATION_NAME.

Subgroup names may not contain more than 12 characters.


This example runs in the "landsat" mapset of the North Carolina sample dataset. The following command creates a group and subgroup containing only the visible light bands of Landsat-7:

i.group group=vis_bands subgroup=vis_bands input=lsat7_2000_10,lsat7_2000_20,lsat7_2000_30

See Also

The GRASS 4 Image Processing manual

g.gui.gcp, i.cluster, i.maxlik, i.rectify, i.ortho.photo


Michael Shapiro, U.S.Army Construction Engineering Research Laboratory
Parser support: Bob Covill (Tekmap, Canada)

Source Code

Available at: i.group source code (history)

Accessed: Tuesday May 14 13:41:43 2024

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© 2003-2024 GRASS Development Team, GRASS GIS 8.3.2 Reference Manual


GRASS 8.3.2 GRASS GIS User's Manual