[Qgis-developer] Simple sample code for function editor

[Alexandre Neto]

I have written this blog post about using user defined functions. But it
might be a very specific case, and It's a kind of workaround.

https://sigsemgrilhetas.wordpress.com/2014/09/09/coordenadas-dos-cantos-do-mapa-em-qgis-map-corner-coordinates-in-qgis/


On Mon, Mar 9, 2015 at 3:30 PM, Barry Rowlingson <
b.rowlingson at lancaster.ac.uk> wrote:

> On Mon, Mar 9, 2015 at 2:19 PM, Larissa Junek <junek at gbd-consult.de>
> wrote:
> > Hello all,
> > I'm writing a new chapter about the new function editor for the user
> > manual 2.8. I'm not confirmed with PYthon programmming.
> > See
> >
> http://docs.qgis.org/testing/en/docs/user_manual/working_with_vector/field_calculator.html#function-editor-tab
> >
> > Is there somebody who can give a short example of code for beginners?
> > I look for a code that shows the new possibilities of the function
> > editor in comparison to the Python console. On Nathan Woodrows blog
> > it is mentioned that it's a possibility to use full Python Code.
> >
> > It would be great if the description includes an explanation of the
> > elements of the code.
>
> Someone recently asked on gis.stackexchange.com how to put the Project
> Title into a field in a Map Composer text label. So I wrote an answer:
>
>
> http://gis.stackexchange.com/questions/137933/how-to-insert-qgis-project-properties-project-title-as-field-or-token-using-an
>
>  That's a fairly minimal example, it just uses one QGIS Python API
> call to get the project title. I don't think you can get it into a
> label in any other way.
>
>  I'm sure someone can improve it to get rid of the dummy argument. I
> should read the documentation...
>
> Barry
>
>
>
> > Thanks!
> >
> > Kind regards,
> > Larissa
> > _______________________________________________
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> > Qgis-developer at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/qgis-developer
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