John,
I'm relatively new to QGIS. I've used it for viewing various sources
of data and some vector editing and geoprocessing. Now, I'd like to
do some basic raster processing, like simply multiplying and adding
rasters, conditional expressions (e.g., if value < 0, then = 0, else
value), slope, aspect, etc....
What is the method to do these via QGIS? GRASS may be an option but
I understand it takes some preprocessing to get your files into GRASS
datasets, which could be a lot of work (numerous data sets, some
several GBs in size.) Thanks.
Have a look at Barry Rowlingson's rasterlang plugin:
http://www.maths.lancs.ac.uk/~rowlings/Qgis/Plugins/plugins.xml
Barry also has a google code page which would likely have his latest
version/improvements:
http://code.google.com/p/bsrplugins/source/browse/#svn/trunk
Carson
--
Carson J. Q. Farmer
ISSP Doctoral Fellow
National Centre for Geocomputation (NCG),
Email: [email protected]
Web: http://www.carsonfarmer.com/
http://www.ftools.ca/
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