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 in between.
Or am I missing something.
If someone believes I'm doing something useless and/or stupid (that also
happens), please do tell.
Can you polygonize contours across a vertical cliff ?
If so, 2 may be "between" 1 and 3, but at some points they may all touch.
On some maps, contours become discontinuous around cliffs and quarries.
--
Andrew C Aitchison
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