Re: Slowing scatter down for the sake of Matlab compatibility

[Robert T. Short]

Jordi Gutiérrez Hermoso wrote:
> Re this bug:
>
>      https://savannah.gnu.org/bugs/?34936
>
> It looks to me like it boils down to keeping Matlab compatibility and
> making a patch object per dot. If we do that, then we really ought to
> figure out a way to optimise __go_patch__ for each possible backend,
> because it's a tremendous slowdown to do this for as little as 1000
> points.
>
> Looks like previous attempts to not create a patch object per point
> have introduced complexity and errors into the function.
>
> Joanna also noticed that my proposed fix only works on fltk, not on gnuplot.
>
> - Jordi G. H.
>
>
>    
Jordi, we went through this a long time ago.  I think the conclusion was 
that MATLAB does the patch object for each dot only up to some number of 
dots (100 is the number I recall).  If you do a patch object per dot, 
then scatter becomes totally unusable for more than a few points.  
Please don't do this.

Bob