[Octave-bug-tracker] [bug #42561] gnuplot error on "demo trimesh"

[Andreas Weber]

Follow-up Comment #6, bug #42561 (project octave):

I tried to create a minimalistic example which shows the problem:

close all
graphics_toolkit gnuplot
x = [-1, -1, 1, 0];
y = [-1, 1, 1, 0];
z = [0, 0.5, 0, 1]; 
tri = delaunay (x(:), y(:));
patch ("Vertices", [x(:), y(:), z(:)], "Faces", tri, "FaceColor", "w");


Shouldn't this draw a line where the 2 faces are connected (as with fltk)?

As Stefan already explained there is another problem where 
colorspec = sprintf ("lc rgb \"#%02x%02x%02x\"",round (255*color));

sometimes over- or undeflows

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