Re: [unclassified] Re: Moving functions from octave to octave-forge?

[Kai Habel]

David Bateman schrieb:
> Shai Ayal wrote:
>   
> > I'll just add what's available in octplot/high_level to this list.
> > unless stated otherwise, they are matlab compatible with v6 graphics
> > -- octplot has no group objects.
> >
> >     
> > > Graphics Stuff:
> > >   contourf fill fill3 gtext pareto patch pcolor peaks pie quiver scatter
> > >   surf surfc zoom meshc
> > >
> > > * contourf, fill, fill3, patch, pcolor, pie all need new graphics
> > > objects for patches, the current code is just a hack to simulate it.
> > >       
> > We now have a working contourf and clabel in octplot/high_level thanks
> > to work by Kai Habel. They rely on patch of course. I see now way to
> > do this with gnuplot. To the best of my knowledge, nothing even
> > approximating patch is not even planned for gnuplot
> >     
> I think patch is possible with gnuplot. What I meant is that all of
> these should wait for patch to be implemented in octave core before
> doing much with them.. If you have something working in octplot, perhaps
> you can suggest patches to the core to and least get the front-end of
> patch objects included in the core..
>
>   
Hello David,
are you sure that gnuplot supports patches? What I have learned from the 
website is that gnuplot supports arbitrary shaped rectangles and has 
some fill options for line plots ..., but polygons? Can you give me a 
pointer what you have in mind?

The contourf function in octplot (or in general) needs patch objects of 
arbitrary shape. This includes concave polygons, the octplot 
implementation uses the OpenGL utilities lib (GLU) for polygon 
tesselation and plotting.

Kai

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