[Matplotlib-users] Zorder and Clip_on issues

[Gael G. <gae...@gm...>]

Hi everyone,

 

I had recently experienced a frustration regarding zorder and clip_on in
Matplotlib.

 

In figure 1 attached here, I would like to put blue horizontal error bars
above the x-axis. As you can see right now, half of it is cut by the x-axis
(for the blue point at H = 0). I used:

 

axes.errorbar(data[:,0], data[:,1], xerr=data[:,2], fmt='', ls ="", c = 'b',
capthick=2, elinewidth=2, clip_on = False, zorder = 10)

 

But even if I change zorder = 1000, the error bar never goes above the axis.
Is it a bug?

 

Regarding the same topic, I also discovered that when using axes.twinx() in
Figure 2 (A : axes; B : axes2 = axes.twinx()). The blue curve (A) never goes
above the red curve (B), whatever zorder I use. I even tried
axes2.set_axisbelow(True), but it doesn't change anything. I really want
"axes2" to be below the "axes". Is it a bug? I had to change it manually
with Illustrator and it worked, but it is of course really not convenient.

 

Thank you very much for your help !