Difference between revisions of "GRASS 6 Tutorial"
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Revision as of 13:36, 30 December 2011
The Free Software/Open Source GIS GRASS 6 is fully operational and stable version for production use. This tutorial tries to give you a hand to familiarize yourself with the improved functionality, especially in the vector engine and attribute management. For further reading, see the references below.
Disclaimer: In case the examples described here do not work properly, you are kindly invited to send us further examples and/or code bugfixes/enhancements. Enjoy the WIKI!
This tutorial is intended for GRASS users who want to migrate from a previous release to the new GRASS Version. If you are a beginner, please also consider additional books or tutorials.
NOTE: This tutorial here still awaits the merge of the previous GRASS 5.7 tutorial.
- 1 Introduction
- 2 Getting started in general
- 3 Getting started - how to migrate to the new GRASS version
- 4 Raster data management
- 5 Vector data management
- 6 Usage examples
- 7 Troubleshooting
- 8 Links of interest
- 9 Further reading
New GRASS development has made major improvements to the vector architecture. The most significant change includes a new 2- and 3-dimensional vector library that manages vector attributes in standard database management systems (DBMS). This system provides the power of true relational databases for vector attribute management while preserving the flexibility of traditional GRASS topological tools. GRASS now also incorporates true 3-dimensional voxels in the NVIZ visualization environment as well as numerous enhancements to virtually every tool in the GRASS library.
Getting started in general
Getting started - how to migrate to the new GRASS version
Raster data management
- The raster management works as it did in previous GRASS versions.
- Tutorials and books written for GRASS 4 and 5 should for the most part still work.
- Raster data processing introduction from the main help manual.
Vector data management
- Vector data processing introduction from the main help manual.
- Default settings for vector geometry; for vector attributes; for db.* modules
- General notes on Geometry management; Managing the default settings; GRASS vector architecture; Geometry stored in native format; Geometry stored in SHAPE file; Import/export of vector data Geometry; Generating vector geometry from various sources
- General notes on Attribute management; Managing the default settings; Examples; Database Schema
There await porting from the GRASS 5.7 tutorial
Basic usage examples
Complex usage examples
Vector network analysis examples
- New Spearfish examples: v.net, v.net.iso, v.net.path etc.
- Old tutorial: http://grass.osgeo.org/grass57/tutorial/network.html
Vector overlay/clipping examples
Examples from US National Atlas
FAQ (Frequently Asked Questions)
- Grass Six Tutorial Troubleshooting
Links of interest
- GRASS-GMT Examples: http://220.127.116.11/~dylan/grass_user_group/