t.rast3d.algebra
Apply temporal and spatial operations on space time 3D raster datasets using temporal 3D raster algebra.
t.rast3d.algebra [-sng] expression=string basename=string [nprocs=integer] [--verbose] [--quiet] [--qq] [--ui]
Example:
t.rast3d.algebra expression=string basename=string
grass.script.parse_command("t.rast3d.algebra", expression, basename, nprocs=1, flags=None, verbose=False, quiet=False, superquiet=False)
Example:
gs.parse_command("t.rast3d.algebra", expression="string", basename="string")
Parameters
expression=string [required]
Algebraic expression for temporal and spatial analysis of space time 3D raster datasets
basename=string [required]
Basename of the new generated output maps
A numerical suffix separated by an underscore will be attached to create a unique identifier
nprocs=integer
Number of r3.mapcalc processes to run in parallel
Default: 1
-s
Check the spatial topology of temporally related maps and process only spatially related maps
-n
Register Null maps
-g
Use granularity sampling instead of the temporal topology approach
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--qq
Very quiet module output
--ui
Force launching GUI dialog
expression : str, required
Algebraic expression for temporal and spatial analysis of space time 3D raster datasets
basename : str, required
Basename of the new generated output maps
A numerical suffix separated by an underscore will be attached to create a unique identifier
nprocs : int, optional
Number of r3.mapcalc processes to run in parallel
Default: 1
flags : str, optional
Allowed values: s, n, g
s
Check the spatial topology of temporally related maps and process only spatially related maps
n
Register Null maps
g
Use granularity sampling instead of the temporal topology approach
verbose: bool, optional
Verbose module output
Default: False
quiet: bool, optional
Quiet module output
Default: False
superquiet: bool, optional
Very quiet module output
Default: False
DESCRIPTION
t.rast3d.algebra performs temporal and spatial map algebra operations on space time 3D raster datasets (STR3DS) by using the temporal 3D raster algebra.
NOTES
The module expects an expression as input parameter in the following form:
"result = expression"
The statement structure is exact the same as of t.rast.algebra, see t.rast.algebra but allows four-dimensional indexing.
REFERENCES
SEE ALSO
t.rast.algebra, t.rast3d.mapcalc, r.mapcalc, t.vect.algebra, t.select
AUTHORS
Thomas Leppelt, Sören Gebbert, Thünen Institute of Climate-Smart Agriculture
SOURCE CODE
Available at: t.rast3d.algebra source code
(history)
Latest change: Saturday Mar 01 11:59:08 2025 in commit d310a3c