Re: [Matplotlib-users] Axis ticks 'zorder'

[Francesco M. <fra...@gm...>]

Hi,

2012/7/30 oc-spam65 <oc-...@la...>:
> Hello,
>
> Can the 'zorder' of the ticks be set? This minimal example shows a
> hard-coded value of 2.5
>
> This may come from file "matplotlib/axes.py", function "draw()". Can it
> be adjusted? Shall it be bug-reported?
>
> #######################################################################
> import matplotlib.pyplot as pyplot
>
> fig = pyplot.figure()
> ax = fig.add_subplot("111")
>
> ax.add_patch(pyplot.Rectangle((0,0), 1, 1, zorder=3))
> ax.xaxis.set_zorder(4)
> # Expected behavior: the ticks should be drawn after the Rectangle,
> # because 4 > 3. They should therefore be visible.
>
> pyplot.show()
> # Problem: The ticks are hidden by the rectangle, contrary to the
> # expected behavior.
>
> print(ax.xaxis.get_zorder())
> # Prints 2.5 instead of 4!
>
> #######################################################################

I confirm the bug on matplotlib v: 1.1.0, Kubuntu 11.04, Python 2.7.1+

>>> ax.xaxis.set_zorder(4)
>>> ax.xaxis.get_zorder()
>>>> 4
>>> plt.draw()
>>> ax.xaxis.get_zorder()

It seems that the call to draw or show sets the zorder to default,
instead of updating it.

@Mr Spam (can you sign your mail, please)
In one of my scripts managed to set zorder to the spines as, e.g.,
ax.spines['left'].set_zorder(101).
This puts the axis spine well on top, but ax.xaxis.set_zorder does
nothing. I've also found a method ax.tick_params,
that has a zorder keyword, but it does nothing too.

Cheers,
Francesco

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