[Qgis-developer] Basic Processing plugin questions

[Victor Olaya]

mmm, it should accept a list. That should be fixed, then

2017-04-05 15:02 GMT+02:00 Tom Chadwin <tom.chadwin at nnpa.org.uk>:
> volaya wrote
>>> 2. Can a Processing plugin take *any* layer, rather than having to choose
>>> between raster and vector?
>>
>> No, not at the moment. The multiple input can have several layer types
>> at once, but single layers can't
>
> Can it? If I add a multiple input, the dropdown only contains my project's
> point (vector) layers. If I explicitly set the datatype for the
> ParameterMultipleInput to -1 (see
> https://github.com/qgis/QGIS/blob/master/python/plugins/processing/tools/dataobjects.py#L53),
> the dropdown correctly contains all my vector layers (point, line, and
> poly).
>
> What I was hoping for is to able to take *any* layer - vector or raster.
> However, datatype ALL_TYPES (defined as [-1] at
> https://github.com/qgis/QGIS/blob/master/python/plugins/processing/tools/dataobjects.py#L51)
> fails, as it won't accept a list:
>
> File "C:/OSGEO4~1/apps/qgis/./python/plugins\processing\core\parameters.py",
> line 362, in __init__
>                             self.datatype = int(float(datatype))
>                         TypeError: float() argument must be a string or a number
>
> I'm clearly not quite understanding this yet. Can anyone help?
>
> Thanks
>
> Tom
>
>
>
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