r.support - Allows creation and/or modification of raster map layer support files.
Contents
Description
r.support allows the user to create and/or edit raster map support information. Editing of raster map
color tables, category labels, header, history, semantic label elements and title is supported. Category
labels can also be copied from another raster map.
Rastersemanticlabelsandbandmanagement
Raster semantic label concept is similar to dimension name in other GIS and remote sensing applications.
Most common usage will be assigning a remote sensing platform sensor band identifier to the raster map
metadata, although any identifier is supported (see i.band.library). Raster semantic label is suggested
to work with imagery classification tools.
Examples
These examples are based on the North Carolina dataset, more specifically the landuse raster map. Copy
the landuse map to the current mapset
g.copy raster=landuse,my_landuse
Updatestatistics
r.support -s map=my_landuse
UpdateTitle
r.support map=my_landuse title="Landuse copied"
AppendtoHistoryMetadata
r.support map=my_landuse history="Copied from PERMANENT mapset"
UpdateUnitsDisplay
r.support map=my_landuse units=meter
Setsemanticlabel
Note: landuse map doesn’t confirm to CORINE specification. This is an example only.
r.support map=my_landuse semantic_label=CORINE_LULC
Keywords
raster, metadata
Name
r.support - Allows creation and/or modification of raster map layer support files.
Notes
If metadata options such as title or history are given the module will run non-interactively. If only
the map name is given r.support will run interactively within a terminal shell and the user with be
prompted for input.
Freeform metadata information is stored in a "hist" file which may be appended to by using the history
option. Currently this is limited to 50 lines of text with a maximum line length of 78 characters. Any
input larger than this will be wrapped to the next line. All other metadata strings available as
standard options are limited to 79 characters.
See Also
i.band.library,r.category,r.describe,r.info,r.null,r.region,r.report,r.semantic.label,r.timestamp
Source Code
Available at: r.support source code (history)
Accessed: Friday Apr 04 01:19:38 2025
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© 2003-2025 GRASS Development Team, GRASS GIS 8.4.1 Reference Manual
GRASS 8.4.1 r.support(1grass)
Synopsis
r.supportr.support--helpr.support [-bsnd] map=name [title=phrase] [history=phrase] [units=string] [vdatum=string]
[source1=phrase] [source2=phrase] [description=phrase] [raster=string] [loadhistory=name]
[savehistory=name] [semantic_label=phrase] [--overwrite] [--help] [--verbose] [--quiet] [--ui]
Flags:-b
Delete the semantic label
-s
Update statistics (histogram, range)
-n
Create/reset the null file
-d
Delete the null file
--overwrite
Allow output files to overwrite existing files
--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
title=phrase
Title for resultant raster map
history=phrase
Text to append to the next line of the map’s metadata file
units=string
Text to use for map data units
vdatum=string
Text to use for map vertical datum
source1=phrase
Text to use for data source, line 1
source2=phrase
Text to use for data source, line 2
description=phrase
Text to use for data description or keyword(s)
raster=string
Raster map from which to copy category table
loadhistory=name
Text file from which to load history
savehistory=name
Text file in which to save history
semantic_label=phrase
Semantic label e.g. S2_8A
