[FIXED] How to define zorder when using 2 y-axis?

Issue

I plot using two y-axis, on the left and the right of a matplotlib figure and use zorder to control the position of the plots. I need to define the zorder across axes in the same figure.

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Problem

import numpy as np
import matplotlib.pyplot as plt
x = np.arange(-10,10,0.01)

fig, ax1 = plt.subplots( 1, 1, figsize=(9,3) )
ax1.plot( x, np.sin(x), color='red', linewidth=10, zorder=1 )
ax2 = ax1.twinx()
ax2.plot( x, x, color='blue', linewidth=10, zorder=-1)

In the previous diagram, I would expect the blue line to appear behind the red plot.

How do I control the zorder when using twin axes?

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I am using:

python: 3.4.3 + numpy: 1.11.0 + matplotlib: 1.5.1

Solution

This should work

ax1.set_zorder(ax2.get_zorder()+1)
ax1.patch.set_visible(False)

Answered By - Dan