t.rast.hants - GRASS manual

NAME

t.rast.hants - Applies HANTS to a space time raster dataset.

KEYWORDS

SYNOPSIS

t.rast.hants

t.rast.hants --help

t.rast.hants [-nlhi] input=name output=name [where=sql_query] nf=integer [fet=float] [dod=integer] [range=lo,hi] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

-n: Register Null maps
-l: Reject low outliers
-h: Reject high outliers
-i: Do not extrapolate, only interpolate
--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 raster dataset
output=name [required]: Name of the output space time raster dataset
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'
nf=integer [required]: Number of frequencies
fet=float: Fit error tolerance
dod=integer: Degree of over-determination; Default: 0
range=lo,hi: Ignore values outside this range

DESCRIPTION
SEE ALSO
AUTHOR

DESCRIPTION

t.rast.hants uses r.hants to filter map values and fill gaps in a space time raster dataset (STRDS).

The user must provide an input and an output space time raster dataset The resulting STRDS will have the same temporal resolution as the input dataset. All maps will be processed using the current region settings.

The user can select a subset of the input space time raster dataset for processing using a SQL WHERE statement. The number of CPU's to be used for parallel processing can be specified with the nprocs option to speedup the computation on multi-core system.

AUTHOR

Markus Metz, mundialis, Germany

SOURCE CODE

Available at: t.rast.hants source code (history)

Accessed: Monday Jul 27 12:30:24 2026