[changeset] clarification to pcolor doc-string

[Kai Habel]

Ben Abbott schrieb:
> On Tuesday, September 23, 2008, at 11:04AM, "John W. Eaton" <jwe at bevo.che.wisc.edu> wrote:
>   
>> On 23-Sep-2008, Ben Abbott wrote:
>>
>> | So as not to confuse, learning c++ remains a future goal for me, so
>> | "I'm not that someone" either :-(
>>
>> The __go_draw_axes__ function for the gnuplot backend is a .m file.
>>
>> jwe
>>
>>     
>
> Ok ... I never would have figured that out. My understanding of octave's archetecture is close to pathetic :-(
>
> I'll take a look.
>
> Ben
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>   
Hello Ben and others,

in 2007 I implemented the interp shading mode for the gnuplot backend.
But it was so slow that I did not suggest a patch for that. If I
remember correctly the usage of 'interpolate 3,3' for pm3d [1] has
increased the time for a plot by a factor of ten. But for a really
smooth plot something like interpolate 5,5 or even more would be
necessary - with even longer plotting times.

Kai

[1] http://gnuplot.sourceforge.net/docs/node214.html#set_pm3d