[Qgis-developer] [Processing] how to handle selections

Victor Olaya volayaf at gmail.com
Thu Jan 19 01:47:10 PST 2017


hmm, not a bad idea, but it is actually very easy to do that using
standard QGIS methods (you can see how simple the fix i made is). The
advantage of vector.features is that it honors the option setting,
without the developer having to take care of that.

Cheers



2017-01-19 10:43 GMT+01:00 Bernhard Ströbl <bernhard.stroebl at jena.de>:
> Hi Victor,
>
> what do you think about enhancing processing's vector.features with an
> additional optional flag that returns the selection no matter if the option
> is set or not?
>
> Bernhard
>
>
> Am 19.01.2017 um 10:35 schrieb Victor Olaya:
>>
>> Good catch
>>
>> I fixed it and now it uses the selected features, regardless of the
>> config parameter. The change is in 2.18 and master branches
>>
>> Thanks!
>>
>> 2017-01-18 10:44 GMT+01:00 Bernhard Ströbl <bernhard.stroebl at jena.de>:
>>>
>>> Hi all,
>>> processing sports the "Save selected features" algorithm. However if in
>>> processing's options you untick "Use only selected features" the
>>> algorithm
>>> outputs _all_ features of the input layer. Although I know that
>>> processing
>>> works only on selections when the option is ticked IMHO the current
>>> behaviour is not intuitive: if an algorithm in its name (and help) claims
>>> to
>>> do something with the selected features it should do that _all the time_.
>>> Opinions?
>>>
>>> Background: I opened a PR [1] yesterday for an algorithm that works on
>>> selected features all the time (won't make sense otherwise) and would
>>> like
>>> processing to be consistent in that respect.
>>>
>>> regards
>>>
>>> Bernhard
>>>
>>> [1] https://github.com/qgis/QGIS/pull/4011
>>>
>>>
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