[QGIS-Developer] Quantile (Equal Count) broken or is data borked?

[Nyall Dawson]

On Mon, 4 Mar 2019 at 00:39, Tobias Wendorff
<tobias.wendorff at tu-dortmund.de> wrote:
>
> Am So, 3.03.2019, 08:31 schrieb Paolo Cavallini:
> > You're right, sorry.
> > Any way to improve this, perhaps taking a larger sample to reduce
> > variation?
> > Thanks.
>
> I've started to use R for all my statistical processing. Natural breaks
> is some kind of kmeans-clustering, but R does natural jenks and others,
> too.
>
> I'm doing the clustering/binning in R and joining back the results
> in QGIS. Maybe that helps for your bigger amout of data.

Hi Tobias,

I think this approach works in some circumstances, but ideally the
"best practice" binning techniques are available directly for use in
QGIS. It's not exactly a "smooth" workflow to require someone to use
an external tool to achieve this.

I'd be interested to hear which R libraries/functions you think give
better results then QGIS' current algorithms -- it should be trivial
to port these algorithms back to QGIS!

Nyall


>