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List:       grass-user
Subject:    Re: [GRASS-user] Apply "v.transform" in polygons with overlays
From:       John Mcgillicuddy <jkmcgil () mchsi ! com>
Date:       2013-02-26 16:35:54
Message-ID: 977E3FE1-D1D9-42D4-8E7A-EC496FBC63B5 () mchsi ! com
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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@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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