Re: patch with interpolated color

[Martin Helm]

Am Dienstag, 1. Juni 2010 23:17:32 schrieb RodgerWu:
> Hi,
> 
> I am new to Octave and have been using Matlab for a long time.
> 
> In matlab I am able to use 'patch' to plot a polygon of any shape filled
> with color interpolated based on colors specified for each vertex.
> 
> I just found that 'patch' in Octave is great for uniform color and doesn't
> support color interpolation at all. Is this true?
> 
> for example, how do I plot a triangle with vertexes at  [0 0; 1 0; 1 1] and
> colors at each corner represented by 0, 1, 2 respectively?
> 
> Thanks for the helps!
> 
> Rodger
> 
With the Gnuplot backend you will not be able to do that, if you switch to 
fltk it is possible (depends which version of octave you are using).

backend("fltk")
patch("Faces", [1 2 3], "Vertices", [0 0; 1 0; 1 1], ...
"FaceVertexCData", [0; 1; 2])
shading interp

- mh