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

DESCRIPTION

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

       Optionally  the  user  can  choose  to export a World File 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 to
       stdout, the world file will be called png_map.wld.

SEE ALSO

        r.out.gdal, r.out.ppm, r.out.ascii, r.in.png

AUTHORS

       Alex Shevlakov
       Hamish Bowman

       Last changed: $Date: 2014-11-01 20:57:37 +0100 (Sat, 01 Nov 2014) $

SOURCE CODE

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

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       © 2003-2018 GRASS Development Team, GRASS GIS 7.4.0 Reference Manual