r3.support - GRASS manual
Author: GRASS Development Team
Description: r3.support: Allows creation and/or modification of 3D raster map layer support files.
Keywords: raster3d, metadata, voxel

## NAME

r3.support - Allows creation and/or modification of 3D raster map layer support files.

## KEYWORDS

raster3d, metadata, voxel

## SYNOPSIS

r3.support
r3.support --help
r3.support [-s] map=name [title=phrase] [history=phrase] [unit=string] [vunit=string] [source1=phrase] [source2=phrase] [description=phrase] [raster=string] [loadhistory=name] [savehistory=name] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

### Flags:

-s
  Update range
--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 3D raster map
title=phrase
  Text to use for map title
history=phrase
  Text to append to the next line of the map's metadata file
unit=string
  The map data unit
vunit=string
  The vertical unit of the map
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

## DESCRIPTION

r3.support allows the user to create and/or edit raster3d map support information. Editing of raster3d map units, history, description and title is supported.

## NOTES

Freeform metadata information is stored in a "`hist`" file which may be appended to by using the history option. Currently this is limited to 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

r.info, r.timestamp

## AUTHORS

Soeren Gebbert, vTI/AK, soerengebbert gmooglemail.com
Based on r.support written by Micharl Shapiro, CERL and others

## SOURCE CODE

Available at: r3.support source code (history)

Accessed: Saturday May 09 13:01:08 2026

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