pcolor and "interp" [changeset-2]

[Ben Abbott]

On Oct 3, 2008, at 7:33 AM, Ben Abbott wrote:

>
> On Oct 2, 2008, at 3:24 PM, Ben Abbott wrote:
>
>> On Thursday, October 02, 2008, at 12:50PM, "John W. Eaton" <jwe at bevo.che.wisc.edu 
>> > wrote:
>>> On  2-Oct-2008, Ben Abbott wrote:
>>>
>>> | Trying again. This time with the facecolor bug reported by Michael
>>> | included.
>>>
>>> OK, I thought I had made the change, checked it in, and pushed it,  
>>> but
>>> I must have forgotten to push.  In any case, your latest changes
>>> should be in the public archive now.
>>>
>>> Now I see that for something like
>>>
>>> pcolor (peaks ())
>>> shading interp
>>>
>>> I get an all green plot.  I'm using gnuplot 4.2.2.  I assumed that  
>>> it
>>> would just fail to do the interpolation, but now the plot changes to
>>> something completely wrong.  I'm a bit surprised by that as I  
>>> thought
>>> the previous behavior was that "shading interp" simply had no  
>>> effect.
>>>
>>
>> This due to an improper zrange being specified. If you save the  
>> gnuplot commands and remove the zrange line it should work properly.
>>
>> To me honest, I was worried about that, but when I tested it  
>> (switching between a standard gnuplot 4.2.3 and one patched for  
>> interpolate colors) ... all went well. I doubt the difference is  
>> that I'm running 4.2.3. It is more likely I did the testing wrong.
>>
>> Ben
>
> I've rebuilt octave from the developers sources last night and  
> installed two gnuplot binaries which I switch between using  
> gnuplot_binary().
>
> For me the unpatched gnuplot 4.2.3 and octave 3.1.51+ produce  
> surface plots as seen with octave 3.0.2 and gnuplot 4.2.3. While the  
> patched gnuplot 4.2.3+ and octave 3.1.51+ now properly interpolate  
> colors.
>
> I've attached a "debug.gp" file created with the commands below  
> while running octave 3.1.51+ with the unpatched gnuplot 4.2.3.
>
> 	octave-3.1.51+:1> gnuplot_binary
> 	ans = gnuplot
> 	octave-3.1.51+:2> pcolor(peaks());
> 	octave-3.1.51+:3> shading interp; drawnow ("x11", "/dev/null",  
> false, "debug.gp")
>
> I'd be interested in hearing what others see rendered when they type
>
> 	$ gnuplot -persist debug.gp
>
> I'm especially interested in the results from gnuplot 4.2.2, and  
> 4.2.4.
>
> Ben


Ok, after waiting a day for replies  ... I noticed I neglected to  
attached the debug.gp file :-(


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