Hi!
Tried to load your rasterfile in 1.8 and current master and nodata is
correctly identified as -9 in both ..
But with one thing you are right .. It seems to get loaded differently ..
while in 1.8 I get the min-max values right after loading i have to go
into properties with master to change the classification ..
But if you mean that I assume that is due to heavy changes in the way
rasters are handled by qgis in master..
(Beside the fact that the GUI for that has changed a lot)
As it is master and not any released version I think there will still
be some changes and there might be probably errors right now ..
So if you think you really found a bug .. just report it as a bug and
we'll see how the developers handle it ..
kind regards
Werner
On Tue, Aug 7, 2012 at 7:32 AM, skampus
stefano.cam...@regione.piemonte.it wrote:
i'm trying to find the difference between raster management in qgis ver. 1.8
and 1.9. but there are some features that i don't understand.
as it has already been stated in other threads, qgis has some problems
(error ?) in treating the value no data in raster.
it makes some confusion in applying transparency to no data, and so the only
way I found to get around this problem is to reclassify the raster
immediately after a raster has been created (for example through the
application of raster operations).
Using the Sextante-saga reclassification module and immediately i convert no
data to -9 value and this valued is suited for transparency.
Needless to say how much this is annoying but now it seems that between
version 1.8 and version 1.9 there is no continuity.
I'll explain: Having dealt with a raster in version 1.8 as mentioned above,
I would expect to (not) see no data in the version 1.9.
instead it seems that the classification made with Ver. 18 is not
recognized by ver. 1.9 and so it begins again.
is it so, or I'm missing something?
s.
ps: please open attached raster with 1.8 and 1.9
1.8: colormap, three classes
1.9: singleband pseudocolor, three classes
please see, how no data in 1.9 don't disappear
http://osgeo-org.1560.n6.nabble.com/file/n4993536/OK_iso_2_50anos.tif
OK_iso_2_50anos.tif
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