r.in.png - GRASS manual
Author: GRASS Development Team
Description: r.in.png: Imports non-georeferenced PNG format image.
Keywords: raster, import, PNG

## NAME

r.in.png - Imports non-georeferenced PNG format image.

## KEYWORDS

raster, import, PNG

## SYNOPSIS

r.in.png
r.in.png --help
r.in.png [-fh] input=name output=name [title=string] [gamma=float] [alpha=float] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

### Flags:

-f
  Create floating-point map (0.0 - 1.0)
-h
  Output image file header only and exit
--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 file
output=name [required]
  Name for output raster map
title=string
  Title for created raster map
gamma=float
  Display gamma
alpha=float
  Alpha threshold

## DESCRIPTION

r.in.png imports a non-georeferenced Portable Network Graphics (PNG) image as a GRASS raster map. Georeferencing .wld files are not supported, for that r.import can be used.

## NOTES

In order to assign georeferencing after import use r.region.

## SEE ALSO

r.import, r.in.gdal, r.out.png, r.region

## AUTHORS

Michael Shapiro
Alex Shevlakov
Glynn Clements

## SOURCE CODE

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

Accessed: Saturday May 09 12:57:52 2026

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