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Note: A new GRASS GIS stable version has been released: GRASS GIS 7.8, available here.
Updated manual page: here

NAME

t.rast3d.algebra - Apply temporal and spatial operations on space time 3D raster datasets using temporal 3D raster algebra.

KEYWORDS

temporal, algebra, raster3d, voxel, time

SYNOPSIS

t.rast3d.algebra
t.rast3d.algebra --help
t.rast3d.algebra [-sng] expression=string basename=string [nprocs=integer] [--help] [--verbose] [--quiet] [--ui]

Flags:

-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
--ui
Force launching GUI dialog

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

Table of contents

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.

SEE ALSO

t.rast.algebra t.rast3d.mapcalc r.mapcalc t.vect.algebra t.select

REFERENCES

PLY(Python-Lex-Yacc)

AUTHORS

Thomas Leppelt, Sören Gebbert, Thünen Institute of Climate-Smart Agriculture

Last changed: $Date$

SOURCE CODE

Available at: t.rast3d.algebra source code (history)

Note: A new GRASS GIS stable version has been released: GRASS GIS 7.8, available here.
Updated manual page: here

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