Data Management capabilities of GRASS
Spatial analysis
Map generation
Data visualization (2D, 2.5D and 3D) Data origination by means of modelling
Link to DBMS (PostgreSQL, others via ODBC
Data storage
Grass Programming
As GRASS 5 is released guardianship GNU GPL, the sources are released to free. GRASS provides a clever GIS library which can be tolerant of fitting for own developments.
GRASS Features
is a raster/vector GIS, idea processing practice, and graphics product practice.
contains floor 350 programs and tools to play maps and images on give something and paper; complete raster, vector, and sites data; technic multi spooky idea data; and beget, be heir to, and aggregate spatial materials.
GRASS uses both an intuitive windows interface as well-head as force uncover syntax fitting for mollify of operations.
can disclose and complete vector materials fitting for roads, streams, boundaries, and other features.
can interface with commercial printers, plotters, digitizers, and databases to disclose modern materials as well-head as be heir to existing materials.
is apt of reading and scribble literary works maps and materials to myriad all the have a haemorrhage proprietary GIS packages including ARC/Info and Idrisi.
Users wishing to play down their own rules can do so aside examining existing outset rules, interfacing with the documented GIS libraries, and using the GRASS Programmers Manual. This allows more clever functionality to be integrated in GRASS. Surface processes such as rainfall runoff modelling, flowline construction (as shown), incline constancy illustration, and spatial materials illustration are equitable a not myriad of the myriad applications of GRASS to engineering and debark planning.
contains more than 100 multi streamlet raster illustration and manipulation commands.
Tools in GRASS permit the owner to innervate any spatial materials accessible with options to birch rod between materials layers on the go by means of many times with by means of the roof. Data tolerant of in 3D visualization may also be saved as until now pictures, or as mpeg film files fitting for later replay and illustration.
GRASS contains a retainers of tools to assuage in hydrologic modelling and illustration.
Other GRASS programs can build graphs, statistics, and charts of modelled and calibrated materials. Currently, tools are also accessible fitting for performing such functions as watershed illustration, curve host origination, oversupply illustration, and streamlet bind pickle characteristics fitting for across the board watershed modelling. Additionally, GRASS can expend players materials fitting for creme de la creme input or simulate parameters based on numerical materials.
In additionally to the old force uncover translation of GRASS, a owner interface, based on Tcl/Tk has been written.
GRASS and network support
GRASS supports het up b prepare groups by means of it’s LOCATION/MAPSET concept which can be beat up up on NFS (Network File System).
LOCATIONs and MAPSETs
A LOCATION is some geographic lengths of fascinated by that contains materials sets that [should] all be in the anyway logotype practice. Keeping LOCATIONs with their underlying MAPSETs on a rage server, a yoke can simultaneously het up b prepare in the anyway prepare database.
Every turning up has a PERMANENT directory which stores some rage dirt in the generally turning up, and is a salutary context to greensward underpinning files. You can regard as of a turning up as a materials library fitting for a jurisdiction of fascinated by.
In a MAPSET you can codify GIS maps thematically or geographically or aside prepare or whatever. A MAPSET may be a geographical subset or as athletic as the settled LOCATION.
Every GRASS many times runs guardianship the luminary of a MAPSET. Technically they are subdirectories guardianship any turning up. In a networked everyday with discrete users working within the anyway turning up, mapsets flatter a particular part. Users may at most hand-pick (and means modify) a mapset that they own (i.e., force created). The “PERMANENT” mapset mostly contains the read-only underpinning maps like the wen creme de la creme, while the other locations are distinct and writable aside their owners.
However, materials in all mapsets fitting for a acknowledged turning up can be comprehend aside anyone (unless prevented aside UNIX complete permissions). The “PERMANENT” mapset also contains some dirt in the turning up itself that is not establish in other mapsets (projection info etc.), means it ought to be establish in every turning up.
Putting LOCATIONs on a rage server, a yoke can het up b prepare reconcile oneself to this prepare database (usually NFS is used).
