[Qgis-developer] min/max for rasters

Paolo Cavallini cavallini at faunalia.it
Mon Dec 16 02:46:38 PST 2013

Il 16/12/2013 12:30, Radim Blazek ha scritto:

> Can you define precisely "more or less normally distributed"?

I have to study a bit to be more accurate. Perhaps we can use some
outlier detection algs (I remember in R they have implemented a few).

> In general, applying more sophisticated/sensitive decision can catch
> correctly more cases but it will become more difficult to be
> communicated  to a user. Until we hide it under single  "intelligent"
> style option.

IMHO normal users should ideally have something reasonable displayed out
of the box, at least in most cases. Power users can tweak things as they
want, I do not think they should be our first target.
>> However, in my case the general setting "use min/max" does not seem to
>> be working.
> Contrast enhancement "Stretch to min/max" is not applied to new raster
> layer? For me it works.

Not, is the Limits -> Minimum/Maximum that has a behavious I did not
understand at first (I assumed it used 100% by default).
Sorry about the noise.
All the best.
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html

More information about the Qgis-developer mailing list