pcolor and "interp" [changeset-2]

[Ben Abbott]

On Friday, October 03, 2008, at 09:03AM, "Jaroslav Hajek" <highegg at gmail.com> wrote:
>On Fri, Oct 3, 2008 at 1:33 PM, Ben Abbott <bpabbott at mac.com> 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
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>>
>
>
>Hi,
>
>Im not sure about this, so I'll better ask: Should any of these
>patches go into 3-0-x (for 3.0.4)? If yes, which ones?
>
>thanks,

Definitely not 3.0.2. I tried this new __go_draw_axes__.m and just got errors (I didn't look into them though).

error: `__get__' undefined near line 27 column 16
error: evaluating assignment expression near line 27, column 14
error: evaluating if command near line 25, column 3
error: called from `__go_draw_axes__' in file `/Users/bpabbott/Development/Octave Toolbox/__go_draw_axes__/__go_draw_axes__.m'

I don't have anything more recent from the 3.0.x branch, but I suspect the answer is no.

Ben