Hi Etienne, I have uploaded an other version that works without matplotlib, although I prefer the other, which is cleaner. But the new one is a better option if using matplotlib is a problem.
Anyway, changing gdal_contour is much more work. Creating polygons instead of lines using the correct way means re-writting all the code, and this scripts are just to get the result. Again, I have to finish them, I was just working on it. Roger 2013/7/4 Etienne Tourigny <[email protected]> > > > On Thu, Jul 4, 2013 at 3:58 AM, Carlo A. Bertelli (Charta s.r.l.) < > [email protected]> wrote: > >> Thanks a lot, Roger, it worked like a charm, just fiddling a little with >> parameters and than run it in python. >> It's really magic, I struggled with this question for two days before >> writing to the list. >> I think that instead of making another script you could add it as an >> option to gdal_contour.py and use it alternatively with -l (default) or -p >> (output to polygons). >> > > not so sure about that, because the script requires matplotlib (although > the option could be disabled if matplotlib cannot be imported). > > >> By the way, another enhancement for gdal_contour could be adding an >> options to cut the output with a line or polygon layer (say the shoreline >> or other boundary). >> c >> >> c >>> >>> On Wed, Jul 3, 2013 at 8:04 PM, Roger Veciana i Rovira < >>> [email protected]> wrote: >>> >>>> Hi, I was just working on that. >>>> I think that you need a script like gdal_contour, but creatig polygons >>>> instead of lines. The algorithm used is Marching Squares. >>>> You can see the code, without explanation, here: >>>> >>>> https://github.com/rveciana/geoexamples/tree/master/python/raster_isobands >>>> In some weeks I'll add some more info in a README file and transform >>>> the file into a working script, not just a function. But you can use it >>>> just changing the file name and the intervals. >>>> >>>> Roger >>>> >>> >> _______________________________________________ >> gdal-dev mailing list >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/gdal-dev >> > > > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev >
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