[Qgis-user] Raster Contrast enhancement: standard deviation tool

[Agustin Lobo]

Hi!

I have some raster layers for which the option "use standard deviation"
of the contrast enhancement does not work: It results into a 0,0
range and a black display (the min, max works fine). I've observed
that in these cases the
disquette symbol to the right is not present.
It works with other layers, also from GTiff images, and with the same
data type (i.e. INT2S). In these cases, the disquette symbol is present.
Any help?

Thanks
Agus