Re: cvs: log cb broken

[Ethan M. <merritt@u.washington.edu>]

On Thursday 03 January 2008 04:18, Petr Mikulik wrote:
> There is a difference between gnuplot 4.2.2 and cvs; 4.2.2 works OK for log 
> cb axis, while cvs gives this error:
> 
>   "bug_logcb.gp", line 4: color axis has cb coord of -10; must be above 0 
>   for log scale!
> 
> What has broken in cvs?

But the error message is correct.  
The cb values go negative and therefore log scale cannot work.

I see that 4.2 does draw something, but I don't understand 
what it is drawing.  I'd say that 4.2 fails to detect the
error, while CVS is doing the right thing by reporting it.

 
> 
> Script:
> 
> plot 'matrix.dat' matrix with image
> 
> set log cb
> replot
> 
> File matrix.dat:
> 2 4 6 8
> 1 2 3 4
> 0 1 2 3
> -2 -1 1 2
> -4 -3 -2 -1
> -6 -5 -4 -3
> 
> ---
> PM

-- 
Ethan A Merritt