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

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: 2014-11-26 14:25:33 +0100 (Wed, 26 Nov 2014) $

SOURCE CODE

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

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