[Qgis-user] Vector menu and Sextante -> ftools behaving inconsistently (was: Re: Invalid geometry)

[Ramon Andiñach]

Done.

One filed via the Sextante plugin tracker: http://hub.qgis.org/issues/5860
One filed via the main QGIS issue tracker (ftools category): http://hub.qgis.org/issues/5861

-ramon.

On 25/06/2012, at 16:12 , Giovanni Manghi wrote:

> Hi Ramon,
> 
> I see also the issue and it is worth filing two tickets, one for ftools
> and the other for sextante.
> 
> thanks in advance
> 
> -- Giovanni --
> 
> 
> 
> On Mon, 2012-06-25 at 09:32 +0800, custard wrote:
>> Hi Sergio,
>> 
>> I had some inconsistencies on my home computer over the weekend, but am now seeing what you're seeing. I'm giving the thread a new subject to better cover what I see as the problem.
>> 
>> Carson and Victor,
>> 
>> In QGIS the two ways of reaching the Geoprocessing -> Intersection tool are giving very different results. Details are below, but since these should give the same result, something is clearly wrong.
>> 
>> Comments?
>> Are we using the files incorrectly?
>> 
>> -ramon.
>> 
>> Method:
>> Using the following files:
>> http://www.mappinghacks.com/data/TM_WORLD_BORDERS_SIMPL-0.2.zip
>> and 
>> http://lists.osgeo.org/pipermail/qgis-user/attachments/20120622/8b8559cf/attachment.zip
>> (Note: second file has no projection details, and needs to be set to WGS84)
>> 
>> Using the Vector -> Geoprocessing Tools -> Intersection (point in first field, polygon in second)
>>     Gives an invalid geometry warning, and an empty shape file. (attached VectorIntersction.zip)
>> 
>> Using Sextante -> Ftools -L Geoprocessing Tools -> Intersection  (also point in first field, polygon in second)
>>     Gives no warinings and a shape file which is essentially a one to many join. (attached SextanteIntersection.zip)
>> 
>> 
>> ----- Original Message -----
>> From: "Sergio A Estay" <sergio.estay at uach.cl>
>> To: qgis-user at lists.osgeo.org, custard at westnet.com.au
>> Sent: Saturday, 23 June, 2012 5:07:49 AM GMT +08:00 Beijing / Chongqing / Hong Kong / Urumqi
>> Subject: Re: Invalid geometry
>> 
>> Hi,
>> 
>> I used the intersection function simply to add the information from the polygon layer table to my point layer table. I used this fuction in all gis software without problems (Qgis old version, arcgis, sextante, gvsig, etc). When I use the function intersection in the main vectorial menu of Qgis I obtain a shp file empty (also the table is empty) and the message of invalid geometry just in my polygon layer (not in my point layer). In the 1.7.4 version and all other softwares I obtained the table with all the attributes (from the original polygon and point layer) without errors for every point (also works fine in gvsig, arcgis and others).
>> 
>> In reference to the invalid geometry of my polygon layers, I checked my shp files (link below) in GRASS, arcgis and gvsig and no one detect any error in the geometry.
>> 
>> sorry for series of e-mail but I am newbie trying to learn Qgis.
>> 
>> Sergio
>>