r.out.png - GRASS GIS manual

Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.

NAME

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

KEYWORDS

raster, export, output, 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

DESCRIPTION
EXAMPLE
SEE ALSO
AUTHORS

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

AUTHORS

Alex Shevlakov
Hamish Bowman

SOURCE CODE

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

Latest change: Thursday Feb 03 11:10:06 2022 in commit: 547ff44e6aecfb4c9cbf6a4717fc14e521bec0be