[Qgis-user] Processing: why tools.vector.values is meant to work only for numeric fields?

[G. Allegri]

Thanks Victor,
this utils methods are useful indeed. Everyone one of us rewrites them more
or less in each plugin he writes :)

all the best,
giovanni


2013/10/31 Victor Olaya <volayaf at gmail.com>

> Thanks for the suggestion, Giovanni
>
> Not sure now about that, i should change the Processing modules that
> use that function, but I guess it can probably be changed.
>
> My plans (once i have a bit more of spare time) are to document all
> those utilities in detail, add new ones and move them to core (like
> the current qgis.utils module), so they can be used by other plugins
> without refering to Processing. Also, I would like to move the
> documentation from the processing manual to the cookbook, having a
> chapter dedicated to all those common methods that can be useful for
> plugin developers.
>
> As I said, I do not have much time now, but I hope to have some more
> spare time soon
>
> Thanks!
>
> 2013/10/31 G. Allegri <giohappy at gmail.com>:
> > I've ntoiced that the utility method "values(layer,*fields)" returns only
> > numeric values, while in case a string is found it returns None. It
> happens
> > because a float cast is used [1]
> > Is it a requriements for other parts of the Processing pframework? In
> case
> > it should be documented, because the docs [2] don't tell about this
> > restriction.
> >
> > giovanni
> >
> > [1]
> >
> https://github.com/qgis/QGIS/blob/master/python/plugins/processing/tools/vector.py#L137
> > [2]
> >
> http://www.qgis.org/en/docs/user_manual/processing/console.html#additional-functions-for-handling-data
> >
> > --
> > Giovanni Allegri
> > http://about.me/giovanniallegri
> > blog: http://blog.spaziogis.it
> > GEO+ geomatica in Italia http://bit.ly/GEOplus
> >
> > _______________________________________________
> > Qgis-user mailing list
> > Qgis-user at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/qgis-user
>



-- 
Giovanni Allegri
http://about.me/giovanniallegri
blog: http://blog.spaziogis.it
GEO+ geomatica in Italia http://bit.ly/GEOplus
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