[GRASS-user] Vector dbf files + Spatial join

Christian Schwartze Christian.Schwartze at uni-jena.de
Tue Jun 24 05:52:59 EDT 2008


using e.g. postgres or mysql as storage backend for vector data you can use
modules like v.db.join or db.execute for complex querying your vector data.


Zitat von Wesley Roberts <wroberts at csir.co.za>:

> Hi All,
> Before I head into learning mySQL I would like to know if grass has a command
> that can merge / spatial join dbf attribute tables (similar to the spatial
> join used in ESRI).
> Reading the archives I see people have used anything from PostgreSQL to mySQL
> to combine the attributes of vectors. I have a 13 point data sets with 15625
> points with attributes attached. I would like to combine all 13 into one
> dbase file and then import into a stats package.
> Do I need to use something like mySQL or does GRASS have a builtin function
> for this sort of application? If not could someone point me towards a GRASS
> orientated mySQL tutorial
> Many thanks,
> Wesley
> Wesley Roberts MSc.
> Researcher: Forest Assessment (Remote Sensing & GIS)
> Forestry and Forest Products Research Centre
> Tel: +27 (31) 242-2353
> Fax: +27 (31) 261-1216
> http://ffp.csir.co.za/
> "To know the road ahead, ask those coming back."
> - Chinese proverb
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