Temporal modules - GRASS GIS 7.8.9dev Reference Manual

Note: This document is for an older version of GRASS GIS that has been discontinued. You should upgrade, and read the current manual page.

GRASS GIS 7.8.9dev Reference Manual

Geographic Resources Analysis Support System, commonly referred to as GRASS GIS, is a Geographic Information System (GIS) used for geospatial data management and analysis, image processing, graphics/maps production, spatial modeling, and visualization. GRASS is currently used in academic and commercial settings around the world, as well as by many governmental agencies and environmental consulting companies.

This reference manual details the use of modules distributed with Geographic Resources Analysis Support System (GRASS), an open source (GNU GPLed), image processing and geographic information system (GIS).

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Temporal commands:

t.connect	Prints/sets general temporal GIS database connection for current mapset.
t.create	Creates a space time dataset.
t.downgrade	Downgrades the version of a space time dataset (TGRASS DB).
t.info	Lists information about space time datasets and maps.
t.list	Lists space time datasets and maps registered in the temporal database.
t.merge	Merges several space time datasets into a single space time dataset.
t.rast.accdetect	Detects accumulation patterns in temporally accumulated space time raster datasets created by t.rast.accumulate.
t.rast.accumulate	Computes cyclic accumulations of a space time raster dataset.
t.rast.aggregate.ds	Aggregates data of an existing space time raster dataset using the time intervals of a second space time dataset.
t.rast.aggregate	Aggregates temporally the maps of a space time raster dataset by a user defined granularity.
t.rast.algebra	Apply temporal and spatial operations on space time raster datasets using temporal raster algebra.
t.rast.colors	Creates/modifies the color table associated with each raster map of the space time raster dataset.
t.rast.contour	Produces a space time vector dataset of specified contours from a space time raster dataset.
t.rast.export	Exports space time raster dataset.
t.rast.extract	Extracts a subset of a space time raster datasets.
t.rast.gapfill	Replaces gaps in a space time raster dataset with interpolated raster maps.
t.rast.import	Imports space time raster dataset.
t.rast.list	Lists registered maps of a space time raster dataset.
t.rast.mapcalc	Performs spatio-temporal mapcalc expressions on temporally sampled maps of space time raster datasets.
t.rast.neighbors	Performs a neighborhood analysis for each map in a space time raster dataset.
t.rast.out.vtk	Exports space time raster dataset as VTK time series.
t.rast.series	Performs different aggregation algorithms from r.series on all or a subset of raster maps in a space time raster dataset.
t.rast.to.rast3	Converts a space time raster dataset into a 3D raster map.
t.rast.to.vect	Converts a space time raster dataset into a space time vector dataset
t.rast.univar	Calculates univariate statistics from the non-null cells for each registered raster map of a space time raster dataset.
t.rast.what	Sample a space time raster dataset at specific vector point coordinates and write the output to stdout using different layouts
t.rast3d.algebra	Apply temporal and spatial operations on space time 3D raster datasets using temporal 3D raster algebra.
t.rast3d.extract	Extracts a subset of a space time 3D raster dataset.
t.rast3d.list	Lists registered maps of a space time raster3d dataset.
t.rast3d.mapcalc	Performs r3.mapcalc expressions on maps of sampled space time 3D raster datasets.
t.rast3d.univar	Calculates univariate statistics from the non-null cells for each registered 3D raster map of a space time 3D raster dataset.
t.register	Assigns timestamps and registers raster, vector and raster3d maps in a space time dataset.
t.remove	Removes space time datasets from temporal database.
t.rename	Renames a space time dataset
t.sample	Samples the input space time dataset(s) with a sample space time dataset and print the result to stdout.
t.select	Select maps from space time datasets by topological relationships to other space time datasets using temporal algebra.
t.shift	Shifts temporally the maps of a space time dataset.
t.snap	Snaps temporally the maps of a space time dataset.
t.support	Modifies the metadata of a space time dataset.
t.topology	Lists temporal topology of a space time dataset.
t.unregister	Unregisters raster, vector and raster3d maps from the temporal database or a specific space time dataset.
t.vect.algebra	Apply temporal and spatial operations on space time vector datasets using temporal vector algebra.
t.vect.db.select	Prints attributes of vector maps registered in a space time vector dataset.
t.vect.export	Exports a space time vector dataset as GRASS GIS specific archive file.
t.vect.extract	Extracts a subset of a space time vector dataset.
t.vect.import	Imports a space time vector dataset from a GRASS GIS specific archive file.
t.vect.list	Lists registered maps of a space time vector dataset.
t.vect.observe.strds	Observes specific locations in a space time raster dataset over a period of time using vector points.
t.vect.univar	Calculates univariate statistics of attributes for each registered vector map of a space time vector dataset
t.vect.what.strds	Stores raster map values at spatial and temporal positions of vector points as vector attributes.

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