Hi Stefan,
thanks for the answer. As I tested Raster Color Editor automatically
recognizes the range of values and excludes on color theming nodata one.
NODATA values always set to black color. I tested also to exclude some
values (for instance if I have a range between 504 and 863 , I set a range
between 600 to 863, excluding values below 600) and I had the same effects:
black color on excluded values.
I use Ubuntu and OpenJDK, it could be also a problem of these OS. I will
test on next days on my wife's laptop (Windows/Oracle JRE) ad see if there
is a difference.
thanks
Peppe
2013/4/9 Stefan Steiniger <sst...@geo.uzh.ch>
> Hi Peppe,
>
> sorry for this blurry answer:
> But as far as I remember it uses a finite number of classes. At least I
> remember hacking in RGB values. Then the colouring is applied using
> equal-range classification (Each color-class has the same number of
> value). But it shoulnd't be too difficult to find out.
> More fancy classification can be applied by converting the raster to
> vector (point or polygon) and using OJ-Vector styles.
> Actually, for better data exploration I often chose this option, i.e. to
> convert to vector and then expect the range of values etc.
>
> Excluding no-data values is possible by defining the range of values to
> color separately. You understand what I mean? I.e. figure out the range
> of raster values or the no data value using the profile tool, and then
> set that range, that does exclude the no-data value, in the color editor.
>
> I did deactivate the no-data value at that time, as it would have taken
> too much time to figure out how that really worked. I.e. it did not work
> when I tested it. So the fastest way to have something ready was to
> simply deactivate it.
>
> cheers,
> stefan
>
> Am 09.04.13 04:03, schrieb Giuseppe Aruta:
> > Hi all,
> > how Raster Color Editor defines how many intervals of color to apply to
> DTM?
> > Is it set to a defined number? If it is a fix interval number, Is it
> > possible to make user aware of this (example, instead to show "Raimbow",
> > it would be better "Raimbow (12 intervals)"?
> >
> > regards
> >
> > peppe
> >
> >
> >
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