[GRASS-user] Apply "v.transform" in polygons with overlays

[John Mcgillicuddy]

Hello all,

I am a member of a group of farmers and agribusinesses that would like to explore using grass or other open  source gis as a replacement for the commercial ag gis platforms out there.   Most of the desktop software is not being updated and the new systems are web based.  These require us to allow sensitive data to leave our control.  We are located around the Midwest but concentrated in eastern iowa.  We would like to find some talented developers to help us explore/develop this (on a paid basis).

Is grass fairly adaptable?

If anyone has any advice I would love to hear from you
Thank you,

John. Mcgillicuddy





Sent from my iPad

On Feb 26, 2013, at 2:51 AM, José María Michia Roberts <jose.maria.michia at gmail.com> wrote:

> Hi all!
> 
> I need to use "v.transform" over layers that are  "topologically
> incorrect" (so they have overlapped polygons, and it is not a
> problem). Of course, many elements disappear after importing the
> layer, and more elements disappear after applying "v.transform".
> 
> To solve this, I wrote a python script "very" configurable, that
> "import/transform/export" the elements one-on-one , from/to a
> non-topological data source.
> 
> Problem: I am not satisfied with the performance. The datasource has
> hundreds of thousands of elements and the process takes many hours to
> complete.
> 
> Question: is there a better approach to solve the overlapped polygons
> processing?
> 
> Note that I have to keep overlapping polygons.
> 
> Thanks in advance!
> José
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