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NAME

r.example.twice - Multiply values in a raster map by two

KEYWORDS

raster, algebra, multiplication

SYNOPSIS

r.example.twice
r.example.twice --help
r.example.twice input=name output=name [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

--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:

input=name [required]
Name of input raster map
output=name [required]
Name for output raster map

Table of contents

DESCRIPTION

r.example does practically do nothing, except for illustrating GRASS GIS raster programming. It copies over an existing raster map to a new raster map. See the source code for details.

NOTES

Some more detailed notes go here.

EXAMPLE

Create a copy of the raster map "elevation" (North Carolina sample dataset): 
g.region raster=elevation -p
r.example input=elevation output=elevation2
r.info elevation2

SEE ALSO

r.stats, v.example GRASS Programmer's Manual

AUTHOR

GRASS Development Team

SOURCE CODE

Available at: r.example.twice source code (history)

Accessed: Monday Jul 27 12:29:15 2026

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© 2003-2026 GRASS Development Team, GRASS 8.5.1dev Reference Manual