Re: [Matplotlib-users] twinx and grid

[Goyo <goy...@gm...>]

2014-02-09 2:29 GMT+01:00 garyr <ga...@fi...>:
> The script below labels both the left and right x-axes and shows a grid. Is
> there a way to force the horizontal grid lines to line up with the tic marks on
> the left axis (ax1)?
>
> import numpy as np
> import matplotlib.pyplot as plt
> fig = plt.figure()
> ax1 = fig.add_subplot(111)
> t = np.arange(0.01, 10.0, 0.01)
> s1 = np.exp(t)
> ax1.plot(t, s1, 'b-')
> ax2 = ax1.twinx()
> s2 = np.sin(2*np.pi*t)
> ax2.plot(t, s2, 'r')
> plt.grid()
> plt.show()

plt.grid() affects the current axes so calling it before creating the
second one should do. I think it would be more consistent if you used
the method ax1.grid() though.

Goyo