[GRASS-dev] [grass-code I][508] r.colors: last 100% rule is forgotten

[grass-dev at grass.itc.it]

code I item #508, was opened at 2007-10-10 19:37
Status: Open
Priority: 3
Submitted By: Hamish Bowman (hamish)
Assigned to: Nobody (None)
Summary: r.colors: last 100% rule is forgotten 
Issue type: module bug
Issue status: None
GRASS version: 6.2
GRASS component: raster
Operating system: Linux
Operating system version: debian/etch
GRASS CVS checkout date, if applies (YYMMDD): 


Initial Comment:
as reported on the mailing list:
  http://article.gmane.org/gmane.comp.gis.grass.devel/22645

There seems to be a bug in r.colors in 6.2 and 6.3.

e.g. for a CELL map containing values of [0-255], if the rules file looks
like this:

0% 0:0:0  37.5% 255:0:0
37.5% 255:0:0  75% 255:255:0
75% 255:255:0  100% 255:255:255

the colr/ file looks like this:

% 0 191.25
0:0 95.625:255:0:0
95.625:255:0:0 191.25:255:255:0

ie the last 100% rule is forgotten.

Same if I give it real values:
G63> r.colors gebco_bathy col=rules << EOF
> 0 0:0:0 95.625 255:0:0
> 95.625 255:0:0 191.25 255:255:0
> 191.25 255:255:0 255 255:255:255
> EOF
WARNING: Your color rules do not cover the whole range of data!
         (rules 0.000000 to 191.250000 but data 0.000000 to 255.000000)

???

the usual way to give percentage is typically 1 rule per line, which
is why we haven't noticed this before:
0% 0:0:0
37.5% 255:0:0
75% 255:255:0
100% 255:255:255


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