[Qgis-user] Geoprocessing dissolve tool

Bernhard Ströbl bernhard.stroebl at jena.de
Mon Sep 21 02:47:34 PDT 2015


Hi Julie,

no, I don't think so. You could, of course, download the current version 
from the repo and replace it in your installation. Otherwise you have to 
tell processing that you do want to use a dissolve field.

Bernhard

Am 21.09.2015 um 11:29 schrieb Julie Pierson:
> Thanks Ralf and Bernhard for your answers.
>
> Sorry, my message wasn't clear, I'm trying to use the dissolve tool from
> the processing toolbox. Other dissolve tools won't do, since I use this
> tool for an extension I created (dissolve with stats), which calls the
> qgis:dissolve algorithm from the processing toolbox.
>
> I'm using QGIS 2.8.3 Wien. Does it mean I'm not using your patch Bernhard ?
>
> Thanks again,
>
> Julie.
>
>
> Le 21/09/2015 11:11, Bernhard Ströbl a écrit :
>> Hi,
>>
>> I worked on the dissolve tool recently , and the work got commited a
>> couple days ago [1]
>> So, if you are using current master, you must set the dissolve field
>> for the layer. If you are using a stable version of QGIS (e.g. 2.10)
>> you must untick the checkbox "Dissolve all (do not use field)". I
>> recommend to use my patch because it is a lot faster than the old
>> algorithm.
>>
>> Bernhard
>>
>> [1]
>> https://github.com/qgis/QGIS/commit/116089e6ec0bd9bfd15395206bd6e880561da859
>>
>>
>> Am 21.09.2015 um 10:42 schrieb Julie Pierson:
>>> Hi all,
>>>
>>> I tried using the dissolve tool from the QGIS geoprocessing tools and
>>> all features get dissolved together, resulting in only one feature,
>>> regardless of the dissolve field. I tried with several datasets. Do you
>>> have the same problem or is it only me ? I've used this tool in the
>>> past, and it worked ok.
>>>
>>> Thanks for your help !
>>>
>>> Julie.
>>> _______________________________________________
>>> Qgis-user mailing list
>>> Qgis-user at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>>
>>>
>>
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