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r.texture.tiled - Runs r.texture in parallel over tiles


raster, texture, tiling


r.texture.tiled --help
r.texture.tiled input=name output=basename method=string size=integer distance=integer tile_width=integer tile_height=integer processes=integer [mapset_prefix=string] [--overwrite] [--help] [--verbose] [--quiet] [--ui]


Allow output files to overwrite existing files
Print usage summary
Verbose module output
Quiet module output
Force launching GUI dialog


input=name [required]
Name of input raster map
output=basename [required]
Name for output basename raster map(s)
method=string [required]
Texture method to apply
Options: asm, contrast, corr, var, idm, sa, sv, se, entr, dv, de, moc1, moc2
size=integer [required]
The size of moving window (odd and >= 3)
Default: 3
distance=integer [required]
The distance between two samples (>= 1)
The distance must be smaller than the size of the moving window
Default: 1
tile_width=integer [required]
Width of tiles
Default: 1000
tile_height=integer [required]
Height of tiles
Default: 1000
processes=integer [required]
Number of parallel processes
Default: 1
Mapset prefix

Table of contents


r.texture.tiled cuts a raster input map into tiles and runs r.texture over these tiles before patching the result together into a single output raster map.

The overlap between tiles is calculated internally in order to correspond to the window size in order to avoid any border effects.

Tiles can be defined with the tile_width, tile_height and overlap parameters. If processes is higher than one, these tiles will be processed in parallel.

The mapset_prefix parameter allows to make sure that the temporary mapsets created during the tiled processing have unique names. This is useful if the user runs r.texture.tiled several times in parallel (e.g. in an HPC environment).


The parameters for texture calculation are identical to those of r.texture. Currently, this module only allows calculating one texture feature at a time. The n flag allowing null cells is automatically set in order to avoid issues at the border of the current computational region / of the input map.


Run r.texture over tiles with size 1000x1000 using 4 parallel processes:
g.region rast=ortho_2001_t792_1m
r.texture.tiled ortho_2001_t792_1m output=ortho_texture method=idm \
   tile_width=1000 tile_height=1000 processes=4




Moritz Lennert


Available at: r.texture.tiled source code (history)

Latest change: Wed Mar 30 10:17:35 2022 in commit: 25b0a9981b66c443a1c1af1d5f26182c93268b45

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