[Octave-bug-tracker] [bug #48141] legend disappears after axes command

[Rik]

Follow-up Comment #4, bug #48141 (project octave):

See the docstring for the axes() command


Called with a single axes handle argument HAX, the function makes
HAX the current axis.  It also restacks the axes in the
corresponding figure so that HAX is the first entry in the list of
children.  This causes HAX to be displayed on top of any other axes
objects (Z-order stacking).


The issue is that legend objects are made from axes objects, even though they
really aren't axes.  When you ask for gca to be the topmost axes object this
causes the legend axes object to be hidden.

Can you test this code under Matlab and then upload the diary file?


diary on
close all
hf = figure (1);
plot(randn(10,1))
hc1 = allchild (hf)
get (hc1, 'type')
hl = legend ('a')
hc2 = allchild (hf)
get (hc2, 'type')
axes(gca) ;
hc3 = allchild (hf)
get (hc3, 'type')
diary off


One simple fix would be to check for any legend object and make sure it stays
on top.  If you look at axes.m you can see that we already do this for
annotation objects


    ## If there is an annotation axes currently on top of the figure
    ## children stack, we will put it back on top




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