Re: fast scatter plots - advice sought

[David Bateman]

Michael D Godfrey wrote:
> "matlab compatibility" should not be carried too far here.  How many 
> users would be
> affected by changes in the children hierarchy?  Absolute matlab 
> compatibility would require
> the the handle values returned by Octave to match those in matlab.  I 
> do know of one program which
> depends on this!  But, I think too much has been made of the 
> compatibility issue in this case already.
> Matching functionality and achieving best performance should be the 
> main point.  If I understand
> the current proposed code, it does this very well (subject to testing 
> and verification for both
> gnuplot and fltk backends).

Agreed but don't go looking for incompatibility unless there is a damn 
good reason.. If there are several ways of doing something picking the 
matlab compatible manner is safest..

Line objects don't support colormaps and the example I gave won't work 
with Jaroslav's code.. This seems a good reason "to keep" matlab 
compatibility to me (ie using patch)

Though note that the mess in __go_draw_axes__ to handle the colormaps 
will probably make Jaroslav's change much slower using patch objects, 
though still faster for a larger number of points..

D.