[Octave-bug-tracker] [bug #43032] surfc does not make contours visible

[Rik]

Update of bug #43032 (project octave):

              Item Group:       Inaccurate Result => Matlab Compatibility   
                  Status:               Need Info => Confirmed              

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Follow-up Comment #4:

Octave is still not 100% compatible with Matlab and it uses a different method
for setting the Z-level for contours in a surfc plot.

After the surfc call in your script, instead of using a for loop to change the
zdata, use


set (h(2), "zlevel", -8);


This works fine, but it requires running a development version of Octave
(4.1.X) availble only if you build from Mercurial sources.  Alas, this fix is
not available in the current stable release (3.8.2).

I can achieve something like it by hacking your script after the surfc call.


hc = h(2);
set (hc, 'zlevel', -8);
set (hc, 'zdata', get (hc, 'zdata') - 10*eps);


This sets the zlevel property manually and then changes the zdata every so
slightly to force a refresh of the contours.


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  <http://savannah.gnu.org/bugs/?43032>

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