On Sun, Jul 25, 2010 at 11:09 PM, iomeneandrei <aborr...@tin.it> wrote: > > Hi Jakko and Sean, > thanks to you both. > > I was wrong to use the term "layer". I would be satisfied even if I could > rotate a single geometric objects or collections of objects; is it possible > to do it in shapely? > If Jakko is right, it should be impossible. > > Best regards, > > Andrea
Hi Andrea, Well, not impossible, because like Jaakko said, Shapely gives you easy access to coordinates that you can transform yourself and supports adaptation of Numpy arrays (using these would let you transform more quickly) although you'd have to pay the price of copying data for each transformation. But to confirm, Shapely has no afine transform capability. The GEOS library doesn't expose any such thing in its APIs either, although there is a framework for transformations in general: http://geos.refractions.net/ro/doxygen_docs/html/classgeos_1_1geom_1_1util_1_1GeometryTransformer.html I wouldn't mind if Shapely *did* have afine transforms and would be happy to help you develop a tested patch. Cheers, -- Sean _______________________________________________ Community mailing list Community@lists.gispython.org http://lists.gispython.org/mailman/listinfo/community
