[Qgis-developer] How should the dissolve tool in Processing work?

[Alexandre Neto]

Have a look into the Dissolve with stats plugin.

For each field, the user can choose what "stat" to use. The attribute name
will be maintained since only one stat can be calculated for each
attribute. You can discard the fields that you have no interest in maintain

If I remember well, ArcGIS does it differently. For each field, you can
choose several stats. The resulting attribute name will be a combination of
the original name and s stat suffix.

Alexandre

Bernhard Ströbl <bernhard.stroebl at jena.de> escreveu no dia seg, 19/10/2015
às 14:43:

> hi Alexandre
>
> Am 19.10.2015 um 14:21 schrieb Alexandre Neto:
> > Hi,
> >
> > I think this is a bit of feature request, but I would say it should be
> > possible to have some control over the remaining attributes. Trimming
> > all attributes seems poor to me, but keeping the attributes with "first
> > attribute found" without informing the user it's also not good.
> >
> >
> >         Harrissou Santanna mentioned the Dissolve with Stats Plugin.
> >         That's the way ArgGIS does it, you can have stats or even
> >         join/concatenate of the non-dissolved attributes.
>
> Could you elaborate on that? Does it do stats for every suitable field?
> This would multiply the number of fields in the output, besides there
> could be problems with field names (dbf has 10 signs if I recall
> correctly) or can you choose the which field to run the stats on? How
> many fields?
>
> Bernhard
>
> >
> >
> > Victor Olaya <volayaf at gmail.com <mailto:volayaf at gmail.com>> escreveu no
> > dia seg, 19/10/2015 às 12:15:
> >
> >     Hi Anita
> >
> >     nice discussion you bring up
> >
> >     Shouldn't it behave like the ftools dissolve tool currently does?
> >
> >     2015-10-19 13:10 GMT+02:00 Anita Graser <anitagraser at gmx.at
> >     <mailto:anitagraser at gmx.at>>:
> >      > Hi,
> >      >
> >      > I'm asking for your input on a discussion concerning the
> >     Processing dissolve
> >      > tool here: http://hub.qgis.org/issues/13502
> >      >
> >      > How should it ideally work, i.e. how should the attributes of the
> >     dissolved
> >      > features be treated? Given the current Processing limitations,
> >     how should
> >      > the options look like?
> >      >
> >      > Thanks in advance! Best wishes
> >      > Anita
> >      >
> >      > _______________________________________________
> >      > Qgis-developer mailing list
> >      > Qgis-developer at lists.osgeo.org
> >     <mailto:Qgis-developer at lists.osgeo.org>
> >      > http://lists.osgeo.org/mailman/listinfo/qgis-developer
> >     _______________________________________________
> >     Qgis-developer mailing list
> >     Qgis-developer at lists.osgeo.org <mailto:
> Qgis-developer at lists.osgeo.org>
> >     http://lists.osgeo.org/mailman/listinfo/qgis-developer
> >
> >
> >
> > _______________________________________________
> > Qgis-developer mailing list
> > Qgis-developer at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/qgis-developer
> >
>
> --
> Bernhard Ströbl
> Anwendungsbetreuer GIS
>
> Kommunale Immobilien Jena
> Am Anger 26
> 07743 Jena
>
> Tel.: 03641 49- 5190
> E-Mail: bernhard.stroebl at jena.de
> Internet: www.kij.de
>
>
> Kommunale Immobilien Jena
> Eigenbetrieb der Stadt Jena
> Werkleiter: Karl-Hermann Kliewe
>
>
> __________ Information from ESET Mail Security, version of virus signature
> database 12430 (20151019) __________
>
> The message was checked by ESET Mail Security.
> http://www.eset.com
>
>
> _______________________________________________
> Qgis-developer mailing list
> Qgis-developer at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-developer
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-developer/attachments/20151019/3123df6e/attachment.html>