Dan, I am using Spatialite CLI for to this job.
1. Import shapefile into Spatialite 2. Create CSV.file for the counties 3. Use Vitual table for counties.csv 4. Use ST_UNION to create a new table with dissolved boundaries 5. Dump the new spatialite table to Shapefile file Noli On 3/2/11, Simon Cropper <scrop...@botanicusaustralia.com.au> wrote: > On 02/03/11 08:37, Dan Putler wrote: >> All, >> >> Is there a FOSS command line tool that runs under Linux for dissolving >> polygon boundaries based on a field in an attribute table that (ideally) >> works directly with shapefiles? There are a number of non-cli tools out >> there, but I'm working with all US counties on a county by county basis, >> and wanted to avoid importing each individual county into another product. >> >> Dan >> _______________________________________________ >> Discuss mailing list >> Discuss@lists.osgeo.org >> http://lists.osgeo.org/mailman/listinfo/discuss >> >> > > Dan, > > My understanding is that SAGA can be accessed using the command line. > Check out this page... > http://sourceforge.net/apps/trac/saga-gis/wiki/Executing%20Modules%20with%20SAGA%20CMD > > If you intend to create a bash script to dissolve your shapefiles, it > would be just as easy I presume to write a script that opens the > shapefile, dissolves the polygons, then closes it; progressively working > through the list of counties. Remember most packages have the ability to > run script. gvSIG uses Jpython, QGIS python, etc. I fact from what I can > tell you can actually import QGIS modules into python. > http://desktopgisbook.com/Creating_a_Standalone_GIS_Application_1 > > > > -- > Cheers Simon > > Simon Cropper > Principal Consultant > Botanicus Australia Pty Ltd > PO Box 160, Sunshine, VIC > W: www.botanicusaustralia.com.au > _______________________________________________ > Discuss mailing list > Discuss@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/discuss > _______________________________________________ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss