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GRASS 6.0.0beta1 source code released E-mail
Written by GRASS GIS   
15 January 2005
The improvements of the vector architecture cover the new 3D multiattribute, multilayer vector library, a modified NVIZ and a few database management tools. DBMS is now integral part of the system.

GRASS 6.0 features

  • Vector library (geometry):
    • multiformat - also external data formats supported (SHAPE-file, PostGIS) without the need of data conversion (through OGR library with 'v.external');
    • Optional PostGIS support implemented for geometry storage via OGR library. which probably allows for multiuser write access to the same vector map;
    • spatial index - v.build (was: v.support) significantly accelerated;
  • Database Management Interface (attributes):
    • Attribute storage in DBMS for compatibility with industry standards (SQL based interface for PostgreSQL, mySQL, ODBC, dBase)
    • multiattribute - attributes saved in dBase files (default) or saved in external DBMS
    • multilayer - features in one vector may represent one or several layers and may be linked to one or several external tables
    • 2D/3D vectors may be created (see screenshot) (eg TINs), already supported in NVIZ
    • forms library implemented for user friendly query dialogs
    • Linear reference systems supported (LRS, to come)
  • Applications/Misc:
    • SQL queries/selects supported by vector modules
    • attributes updating is supported through the forms library (d.what.vect lets you modify directly the attached attributes)
    • Shortest path vector networking (screenshot) - based on DGLIB (Directed Graph Library), costs may be assigned both to nodes and arcs (and also different in both directions of a vector line)
    • new v.digit with GUI under construction (screenshot)
    • import and export of any OGR vector formats as supported by OGR (Shapefile, TIGER, MapInfo and GML2, PostGIS and DGN)
    • GUI generated by front end on runtime and display manager (screenshots)
    • i18n: support for multiple languages (at time framework implemented, translators needed)
    • multiple GRASS sessions: a user can start more than one session in parallel
  • See http://grass.itc.it/grass60/

Source: The GRASS GIS Homepage

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