| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859 |
- CHANGES IN GRASS 6 compared to GRASS 5
- * New Vector Engine (geometry):
- o Support for 2D/3D vectors (see screenshot) (CAD drawings,
- TINs), visualization supported in NVIZ
- o multiformat - also virtual map supported from external
- data sources (SHAPE-file, PostGIS) without the need of data
- conversion (through OGR library with 'v.external');
- Export/Import to PostGIS;
- o spatial index build on the fly - 'v.build' (was:
- v.support) significantly accelerated;
- o category index to accelerate attribute queries;
- * Database Management Interface (attributes):
- o Attribute storage in DBMS for compatibility with industry
- standards (SQL based interface for PostgreSQL, mySQL, ODBC, dBase)
- o multiattribute - attributes saved in dBase files (default)
- or saved in external DBMS
- o multilayer - features in one vector may represent one or
- several layers and may be linked to one or many external
- tables
- o forms library implemented for user friendly query dialogs
- o Linear reference systems supported (LRS, yet to integrate)
- * Applications/Misc:
- o SQL queries/selects/extractions supported by vector modules
- o interactive attributes updating is supported through the
- forms library (d.what.vect lets you modify directly the
- attached attributes)
- o Vector network analysis: Shortest path, Traveling salesman
- (round trip), Allocation of sources (subnetworks), Minimum
- Steiner trees (starlike connections), and isodistances (from
- centers) (e.g. shortest path, see 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)
- o new v.digit with GUI (screenshot)
- o import and export of any OGR supported vector format
- (Shapefile, TIGER, MapInfo and GML2, PostGIS and DGN)
- o GUI generated on runtime and display manager (screenshots)
- o i18n: support for multiple languages (messages partially
- indicated and translated)
- o multiple GRASS sessions: a user can start more than one session at the time
- * Interoperability
- o Raster and vector data interoperability is granted through
- the GDAL/OGR libraries which implement interfaces to OGC
- standards and common GIS data formats
- * Volume visualization
- o NVIZ now supports volume (voxel) visualization
- o VTK export
- * Large File Support for raster maps (Experimental!)
- o GRASS 6.0 experimentally supports reading and writing
- large files (> 2GB, LFS support)
- * Programmer's manual integrated into source code (doxygen)
|
