[Qgis-developer] [Qgis-user] Centroid of polygon

[Jonathan Moules]

Hi All,
Thanks for the replies, that did it.

I've opened https://hub.qgis.org/issues/11008 per Andreas' suggestion.

Cheers,
Jonathan



On 5 August 2014 10:58, Andreas Neumann <a.neumann at carto.net> wrote:

> Hi,
>
> For me it is very strange that
>
> x(centroid($geometry))
> y(centroid($geometry))
>
> does not work in the QGIS expressions.
>
> There is a $x and $y - but this does only work directly on a current
> feature if it is a point feature.
>
> The workaround with xmin/ymin
>
> xmin(centroid($geometry))
> ymin(centroid($geometry))
>
> works, but seems cumbersome.
>
> Could you open a ticket please?
>
> Andreas
>
> Am 04.08.2014 17:22, schrieb Goyo:
> > This works in master:
> >
> > xmin(centroid($geometry))
> > ymin(centroid($geometry))
> >
> > Goyo
> >
> > 2014-08-04 18:28 GMT+02:00 Jonathan Moules <
> jonathanmoules at warwickshire.gov.uk>:
> >> Hi list,
> >> Quick question, how do you use the Field Calculator to get the centroid
> as
> >> an attribute? I'm aware of this question answer:
> >>
> http://gis.stackexchange.com/questions/11705/using-field-calculator-in-qgis-to-update-columns-with-centroid-coordinates
> >> - but want to do it using just the field calculator.
> >>
> >> I see under "Geometry" that there's a "centroid" function, but can't
> figure
> >> out how to use it for this purpose.
> >>
> >> Suggestions welcome.
> >> Thanks,
> >> Jonathan
> >>
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