t.rast3d.univar - GRASS manual

NAME

t.rast3d.univar - Calculates univariate statistics from the non-null cells for each registered 3D raster map of a space time 3D raster dataset.

KEYWORDS

temporal, statistics, raster3d, voxel, time, parallel

SYNOPSIS

t.rast3d.univar

t.rast3d.univar --help

t.rast3d.univar [-es] input=name [zones=name] [nprocs=integer] [output=name] [percentile=float[,float,...]] [where=sql_query] [region_relation=string] [separator=character] format=name [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

-e: Calculate extended statistics
-s: Suppress printing of column names
--overwrite: Allow output files to overwrite existing files
--help: Print usage summary
--verbose: Verbose module output
--quiet: Quiet module output
--ui: Force launching GUI dialog

Parameters:

input=name [required]: Name of the input space time raster3d dataset
zones=name: Raster map with zones to compute statistics for; 3D raster map with zones
nprocs=integer: Number of threads for parallel computing; 0: use OpenMP default; >0: use nprocs; <0: use MAX-nprocs; Default: 0
output=name: Name for output file
percentile=float[,float,...]: Percentile to calculate (requires extended statistics flag); Options: 0-100
where=sql_query: WHERE conditions of SQL statement without 'where' keyword used in the temporal GIS framework; Example: start_time > '2001-01-01 12:30:00'
region_relation=string: Process only maps with this spatial relation to the current computational region; Options: overlaps, contains, is_contained
separator=character: Field separator character between the output columns; Special characters: pipe, comma, space, tab, newline; Default:
format=name [required]: Output format; Options: plain, json, csv; Default: plain; plain: Plain text output; json: JSON (JavaScript Object Notation); csv: CSV (Comma Separated Values)

DESCRIPTION
SEE ALSO
AUTHOR

DESCRIPTION

t.rast3d.univar provides the same functionality as t.rast.univar, the only difference is the 3D raster map layer metadata. Please refer to the manual page of t.rast.univar for documentation and examples.

AUTHOR

Sören Gebbert, Thünen Institute of Climate-Smart Agriculture
Stefan Blumentrath (support for zones)

SOURCE CODE

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

Accessed: Wednesday Jun 24 03:57:30 2026