## 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](t.rast.algebra.md) but allows four-dimensional
indexing.

## REFERENCES

[PLY(Python-Lex-Yacc)](https://www.dabeaz.com/ply/)

## SEE ALSO

*[t.rast.algebra](t.rast.algebra.md),
[t.rast3d.mapcalc](t.rast3d.mapcalc.md), [r.mapcalc](r.mapcalc.md),
[t.vect.algebra](t.vect.algebra.md), [t.select](t.select.md)*

## AUTHORS

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