Re: Very slow mesh on MacOS X

[Joe Koski]

on 10/6/06 11:18 AM, Dmitri A. Sergatskov at address@hidden wrote:

> On 10/6/06, Quentin Spencer <address@hidden> wrote:
> 
>> 
>> Having said that, if there are for loops in the mesh code, it would be
>> nice to eliminate them. Also, gnuplot 4.2 will have a binary data
>> transfer capability, and I think using it could help with any plots (2D
>> or 3D) that have large amounts of data, although I'm still not sure
>> that's the bottleneck here.
> 
> 200x200 mesh is really a minuscule data set, so switching to
> binary data format (which I am all for) would not help here.
> (plot(rand(1,40000) takes a couple seconds on my machine)
> The problem is hidden lines removal algorithm in gnuplot.
> 
>> 
>> Quentin
>> 
> 
> Dmitri.
> --

Dmitri,

Yes, it appears the delay is in gnuplot/aquaterm for me too. If I do

octave:2> tic; sombrero(200); toc;
Elapsed time is 1.033607 seconds.

I see the elapsed time displayed in the terminal output for over 40 seconds
before the plot appears in aquaterm with my octave-2.9.9. This is with
gnuplot-4.2 and aquaterm-1.0.1, so I don't think things will get any faster
when everyone switches to gnuplot-4.2.

Joe