Monday 30 June 2008

GRASS as GIS open Source in Ubuntu

We are oftenly using some GIS aplication licensed in windows like ArcView, ArcInfo, ERmapper or the other. How about open source in GIS application. There many too open source application, but the most famous is GRASS. This application contain many feature, for reading, analisys, mapping, edit and many of your spatial or remote sensing data.

Commonly referred to as GRASS, this is a Geographic Information System (GIS) used for geospatial data management and analysis, image processing, graphics/map production, spatial modelling, 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.
GRASS (Geographic Resources Analysis Support System) is a raster/vector GIS, image processing system, and graphics production system. GRASS contains over 350 programs and tools to render maps and images on monitor and paper; manipulate raster, vector, and sites data; process multi spectral image data; and create, manage, and store spatial data. GRASS uses both an intuitive windows interface as well as command line syntax for ease of operations. GRASS can interface with commercial printers, plotters, digitizers, and databases to develop new data as well as manage existing data.
Many data format that support to input or to create in GRASS, as generally the data devide 3 kind, tah is :
* 2D raster data,
* 3D raster data (voxels),
* topological vector data (2D and 3D)
n detail:

RASTER: The GDAL library (r.in.gdal) is used, see the GDAL project format list for full capabilities. Examples include:

* Raster: ASCII, ARC/GRID, E00, GIF, GMT, TIF, PNG, ERDAS LAN, Vis5D, SURFER (.grd) ...
* Images: CEOS (SAR, SRTM, LANDSAT7 etc.), ERDAS LAN, HDF, LANDSAT TM/MSS, NHAP aerial photos, SAR, SPOT, ... can be read

VECTOR: The OGR library (v.in.ogr) is used, see the OGR project format list. Examples include:

* Vector: ASCII, ARC/INFO ungenerate, ARC/INFO E00, ArcView SHAPE (with topology correction), BIL, DLG (U.S.), DXF, DXF3D, GMT, GPS-ASCII, USGS-DEM, IDRISI, MOSS, MapInfo MIF, TIGER, VRML, ...
* Sites (vector point data lists): XYZ ASCII, CSV, dBase, ...

If you want to install GRASS in your ubuntu or the other distro linux. Just go to GRASS Website in page dowenload, and follow the instruction to install it

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