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Note: A new GRASS GIS stable version has been released: GRASS GIS 7.6, available here.
Updated manual page: here

NAME

r.out.png - Export a GRASS raster map as a non-georeferenced PNG image.

KEYWORDS

raster, export, PNG

SYNOPSIS

r.out.png
r.out.png --help
r.out.png [-tw] input=name output=name [compression=integer] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

-t
Make NULL cells transparent
-w
Output world 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:

input=name [required]
Name of input raster map
output=name [required]
Name for new PNG file (use '-' for stdout)
compression=integer
Compression level of PNG file
(0 = none, 1 = fastest, 9 = best)
Options: 0-9
Default: 6

Table of contents

DESCRIPTION

r.out.png exports a GRASS GIS raster map in non-georeferenced Portable Network Graphics (PNG) image format, respecting the current region resolution and bounds.

Optionally the user can choose to export a World File (.wld) to provide basic georeferencing support. When used with the transparency flag this can create images useful for KML, TMS, or WMS overlays. (e.g. for use in Google Earth or as OpenLayers tiles) If output is redirected to stdout, the world file will be called png_map.wld.

EXAMPLE

The example is based on the North Carolina sample data location.

Export of the soil map to PNG format with world file:

g.region raster=soils_Kfactor -p
# export PNG file with additional world file
r.out.png input=soils_Kfactor output=soils_Kfactor -w
# verify
gdalinfo soils_Kfactor.png

SEE ALSO

r.out.gdal, r.out.ppm, r.out.ascii, r.import

AUTHORS

Alex Shevlakov
Hamish Bowman

Last changed: $Date: 2019-04-02 09:31:49 -0700 (Tue, 02 Apr 2019) $

SOURCE CODE

Available at: r.out.png source code (history)


Note: A new GRASS GIS stable version has been released: GRASS GIS 7.6, available here.
Updated manual page: here

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© 2003-2019 GRASS Development Team, GRASS GIS 7.4.5svn Reference Manual