[Qgis-developer] Fwd: How to Iterate with process.runalg()

[Matt Wilkie]

Thank you Victor, I'll look at that see what I can understand and apply.

Matt

On Tue, Jun 16, 2015 at 11:55 PM, Victor Olaya <volayaf at gmail.com> wrote:

> There is no command to run and algorithm iteratively from the command
> line. You can iterate creating yourself a loop and separating the features
> of the input layer in the loop.
>
> This method from the AlgorithmExecutor class might help you:
>
>
> https://github.com/qgis/QGIS/blob/master/python/plugins/processing/gui/AlgorithmExecutor.py#L58
>
> Hope this helps
>
> Cheers
>
>
>
> 2015-06-16 20:45 GMT+02:00 Matt Wilkie <maphew at gmail.com>:
>
>> *No bites on the qgis-user list, cross-posting to developers to fish for
>> more help.*
>>
>>
>> Hi folks,
>>
>> What is the python console syntax for the equivalent of pushing the
>> "iterate over layers" processing button when using runalg() ? e.g.
>> "p.runalg(... iterative=yes)".
>>
>> From "Additional functions for handling data" section in the training
>> manual it likely has something to do with "getfeatures(layer)" but I'm not
>> sure how to use these together.
>>
>> More at
>> http://gis.stackexchange.com/questions/150703/interactive-for-each-item-in-do-in-qgis/151042#151042
>>
>> I tried to figure this out myself using the "Processing >> History and
>> log" dialog, but that doesn't show any results when the Iterate button is
>> depressed. In the following screen shot, the bottom two "INFO" entries are
>> for an iterative processing operation, but they don't have corresponding
>> "ALGORITHM" entries. While the topmost "INFO" corresponds to the one and
>> only "ALGORITHM" entry, which wasn't iterative.
>>
>>
>> ​
>>
>> I'm using 32bit QGIS 2.8 on Windows (via Osgeo4w).
>>
>> best regards,
>>
>> Matt
>>
>>
>>
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>> Qgis-developer at lists.osgeo.org
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>>
>
>
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