Re: [Qgis-user] Union Tool - Ftools/Sextante - How should the real result be

2013-05-12 Thread Victor Olaya
Yes please, fill an issue (thanks in advance!) I remember some discussion in the IRC channel or Mailing List regarding that problem with iterators, so that might be the reason... I will check if other modules have that problem Thanks! Victor 2013/5/8 vinayan : > Sorry ...forgot to mention that

Re: [Qgis-user] Union Tool - Ftools/Sextante - How should the real result be

2013-05-08 Thread vinayan
Sorry ...forgot to mention that I was using Qgis master version 9e5b889 for the above test. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Union-Tool-Ftools-Sextante-How-should-the-real-result-be-tp5051653p5052154.html Sent from the Quantum GIS - User mailing list archive

Re: [Qgis-user] Union Tool - Ftools/Sextante - How should the real result be

2013-05-08 Thread vinayan
Hi Victor, Sorry for the late reply. Thanks for the fix. Now for the second case described in my question, it works well. The results are correct as per the explanation by Bernhard. Now for the first case, the results are not correct. Please see the before and after results from a simple shapefil

Re: [Qgis-user] Union Tool - Ftools/Sextante - How should the real result be

2013-05-07 Thread Bernhard Ströbl
[mailto:vola...@gmail.com] Sent: Tuesday, May 07, 2013 10:02 AM To: Ivan Santiago Cc: senhor.n...@gmail.com; qgis-user@lists.osgeo.org Subject: Re: [Qgis-user] Union Tool - Ftools/Sextante - How should the real result be Ivan could you provide some small dataset where you are seeing that? Information about

Re: [Qgis-user] Union Tool - Ftools/Sextante - How should the real result be

2013-05-07 Thread Victor Olaya
Ivan could you provide some small dataset where you are seeing that? Information about SEXTANTE version is also welcome (I assume you are using the latest QGIS master, but just in case...There is no need to reinstall SEXTANTE, just reinstall the latest QGIS dev, which includes SEXTANTE) Thanks!

Re: [Qgis-user] Union Tool - Ftools/Sextante - How should the real result be

2013-05-07 Thread Ivan Santiago
Hello: I downloaded (now) and reinstalled Sextante. Unfortunately the results were the same, holding duplicate polygons when using Union tool. It is easy to see the dups applying transparency. --- Iván Santiago GIS Specialist Information Technologies Office of Manageme

Re: [Qgis-user] Union Tool - Ftools/Sextante - How should the real result be

2013-05-07 Thread Ivan Santiago
[mailto:vola...@gmail.com] Sent: Tuesday, May 07, 2013 10:02 AM To: Ivan Santiago Cc: senhor.n...@gmail.com; qgis-user@lists.osgeo.org Subject: Re: [Qgis-user] Union Tool - Ftools/Sextante - How should the real result be Ivan could you provide some small dataset where you are seeing that? Information about

Re: [Qgis-user] Union Tool - Ftools/Sextante - How should the real result be

2013-05-06 Thread Victor Olaya
I have made a fix to the SEXTANTE union tool. Please check that it now behaves correctly Thanks! Victor 2013/5/6 Alexandre Neto : > In my experience, there are some useful uses for the example 1 given by > Vinayan. > > For example, I have, in the same layer, overlapping service areas for urban >

Re: [Qgis-user] Union Tool - Ftools/Sextante - How should the real result be

2013-05-06 Thread Alexandre Neto
In my experience, there are some useful uses for the example 1 given by Vinayan. For example, I have, in the same layer, overlapping service areas for urban parks. In order to calculate available park area to the population in the overlapping areas, I need to break polygons where they overlap, and

Re: [Qgis-user] Union Tool - Ftools/Sextante - How should the real result be

2013-05-06 Thread Bernhard Ströbl
Hi Vinayan, just some comments: IMHO features in layers to union should not overlap within one layer (e.g. landuse is either A or B), so your examples are theoretical only. Example 1 does not make sense in this respect. Example 2: If we assume that the circles in layer 2 do not overlap and the

[Qgis-user] Union Tool - Ftools/Sextante - How should the real result be

2013-05-06 Thread vinayan
Hi, At present the union tool does not give correct results in sextante/ftools. After looking at some bug reports, I feel that even in QGIS 1.8, the union tool was not producing the correct output either attribute-wise or geometry-wise. My question is how should the real output be? I have two cas