[Octave-bug-tracker] [bug #43447] trisurf produces misplaced vertical line

[Avinoam Kalma]

Follow-up Comment #13, bug #43447 (project octave):

Hi,

the coloring difference is becuase of colormap change
(lines 1633-174) in __go_draw_axes__.m

 if (length (cmap) > 0)
    fprintf (plot_stream,
             "set palette positive color model RGB maxcolors %i;n",
             cmap_sz);
    fprintf (plot_stream,
             "set palette file "-" binary record=%d using 1:2:3:4;n",
             cmap_sz);
    fwrite (plot_stream, [1:cmap_sz; cmap.'], "float32");
    fwrite (plot_stream, "n");
  endif

if you comment them out, you will get the same coloring as in fltk.

The misplaced vertical line is actually not misplaced, but a
vertical line gnuplot add in 3D image. For examples:

f = @(x,y) exp(-x.*x-y.*y);
ezmesh (f, [-1, 1]);

gnuplot draws the frontal horizontal line, from
(-1,-1,0) to (-1,-1,exp(-0.02)).
with fltk you will not see this line.

Avinoam


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