The GRASS Development Team announces:
The Geographic Resources Analysis Support System, commonly referred to as GRASS GIS, is a Geographical Information System (GIS) used for data management, image processing, graphics production, spatial modeling, and visualization of raster, vector and sites data. It is open source Free Software released under the GNU General Public License (GPL).
GNU/Linux, Sun Solaris (SPARC/Intel), Silicon Graphics Irix, Mac OS X/Darwin, Microsoft Windows with Cygwin, HP-UX, DEC-Alpha, AIX, BSD, iPAQ/Linux and other UNIX compliant platforms (32/64bit).
The new source code is available now, and selected binary distributions for major operating systems will be published shortly.
For details on GRASS software capabilities please refer to: http://grass.itc.it/general.html
Geometry management: GRASS 5.7.0 comes with a completely overhauled vector engine which is extended to manage 2D and 3D topological vector data. The new internal vector data format is portable between 32bit and 64bit platforms. In addition, a new spatial indexing system accelerates data access. Vector data from other GIS software can be imported (allowing for topological data clean-up) as well as live-linked into the GRASS database. The new Directed Graph Library provides support for vector network analysis. Vector map overlays, intersections and extraction of features are implemented.
Attribute management: The new vector engine includes full and flexible integration of database management systems (DBMS) for attribute management (currently PostgreSQL, mySQL, DBF, and ODBC are supported). SQL statements are used to manage attributes. Graphical updating of vector attributes has been implemented as well.
User interface: A graphical user interface (GUI) for every module is now generated on the fly. A new display manager has been implemented, which is supplemented by an updated version of the classic ‘tcltkgrass’ GUI menu structure. NVIZ, the included visualization package, is enhanced to display 3D vector data. Additionally, a completely new graphical tool for digitizing has been implemented.
Multi-session: Users can now run concurrent GRASS 5.7 sessions. It is also possible to run GRASS 5.3.x and 5.7.0 in parallel in the same LOCATION.
Generating new GRASS LOCATIONs: New LOCATIONs with automatically set projection information can be generated by EPSG code number from the start-up screen. Within a GRASS session, LOCATIONs can be automatically created from existing datasets (raster data as well as vector data).
Data Import/Export: GRASS 5.7.0 is integrated with the GDAL/OGR library to support an extensive range of raster and vector formats. OGC-conformal Simple Features vector data are converted into the topological GRASS format; conversely, export into Simple Features is also possible.
Enhancements included from 5.3.0: This release bundles the new vector capabilities with all the improvements from GRASS 5.3.0 (e.g. support for datum transformation, use of external PROJ4 and GDAL/OGR libraries, shared libraries making binary distributions significantly smaller, G3D 3-D Raster Voxel tools). The raster capabilities of 5.7.0 are identical with those of 5.3.0.
For a more comprehensive list of changed modules see the ChangeLog.
For a complete list of command in GRASS 5.7.0, see HTML manuals.
We are always looking for both testers and developers to help us maintain and accelerate this development cycle.