[Octave-bug-tracker] [bug #57783] Propertie "edgecolor" of the fill() function and the patch() function doesn't work correctly

[Patricio]

URL:
  <https://savannah.gnu.org/bugs/?57783>

                 Summary: Propertie "edgecolor" of the fill() function and the
patch() function doesn't work correctly
                 Project: GNU Octave
            Submitted by: pyeste
            Submitted on: Mon 10 Feb 2020 02:38:12 PM UTC
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 5.1.0
         Discussion Lock: Any
        Operating System: GNU/Linux

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Details:

Hi,

I've been playing with a few properties of the fill() function and the patch()
function, particularly those concerning the properties of the edge (outline),
and I've seen some differences between using "gnuplot" and "qt". This is the
example code that I've been using:

x = 1:365;
y1 = ones(1,365);
y2 = 2*ones(1,365);
fx = [x,fliplr(x)];
fy = [y1,fliplr(y2)];
f = fill(fx,fy,'b'); % Or patch(fx,fy,'b')
set(f,'facealpha',0.1)
set(f,'edgecolor','none')
xlim([0 366])
ylim([0 3])

While this code produces a blue rectangle with some transparency and without
edges using "qt", in the case of "gnuplot" setting the 'edgecolor' to 'none'
doesn't work and the edges are plotted.  I've also tried to set the
'edgealpha' property to 0.1 (as 'facealpha'), but doesn't work for neither
"qt" nor "gnuplot". It seems that the 'edgealpha' property hasn't been
implemented yet according to the documentation of patch objects
(https://octave.org/doc/interpreter/Patch-Properties.html)





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