On Fri, 20 Oct 2017, Vincent Mora wrote:
I'll also try the gdal_polygonize approach, but I don't think it's the
same thingl: with raster-classif + gdal_polygonize, if you have 3
classes 1,2,3 polygons from 1 can touch a polygon from 3, with contour
lines there will always be a polygon of class 2
Hi all,
Thanks a lot for the feedback.
I have also resorted to polygonize (geos-polygonize) and ran into the
classification problem that you mention. There is also the issue of
performance if you have a lot of complex polygons, on a high res raster,
contours would take a couple of seconds, and ge
Hi Even,
Thank you, that could indeed solve the problem.
Best regards,
Tamas
2017-10-20 0:10 GMT+02:00 Even Rouault :
> On jeudi 19 octobre 2017 23:56:29 CEST Tamas Szekeres wrote:
> > It looks like DOWNLOAD_SCHEMA=NO would do the trick, but if I use this
> in a
> > VRT file this way it crash
> I think I did something similar to the "ends matching" in a python
> script that creates those polygons (in a particular context that also
> requires tiling).
>
> What I'd like to know, is if there is a reason why it's not already
> available in gdal, since there is the need for that and apparent
