Grid under bar plot

[cgadal]

How do I put the grid lines under the bar plot ?

I have tried to play with the zorders, as well as with a.set_axisbelow(True), but it did not change anything.

[weber-s]

Hello,

Windrose changes the base Zorder for every drawing to default to -1000, in order to have the grid on. Otherwise, strange things happen for the yticklabels:

the ax.set_axisbelow(True) simply put all axis zorder to 0.5, which is still faaar from the -1000...

So if you want to put the grid behind, you have to put to a zorder value lower than -1000.

If you look at the set_axisbelow code, you will see that it is simply a wrapper around axis.set_zorder. So simply write it yourself after your plot

for axis in ax._get_axis_list():
   axis.set_zorder(-2000) # or every thing lower than -1000
self.stale = True

[ocefpaf]

Closing this as answered. Please re-open if you disagree,

[blaylockbk]

this solution seems incomplete;

import numpy as np

N = 500
ws = np.random.random(N) * 6
wd = np.random.random(N) * 360

from windrose import WindroseAxes

ax = WindroseAxes.from_ax()
ax.bar(wd, ws, normed=True, opening=0.8, edgecolor="white")
ax.set_legend()

for axis in ax._get_axis_list():
    axis.set_zorder(-2000)  # or every thing lower than -1000

gives the error AttributeError: 'WindroseAxes' object has no attribute '_get_axis_list'

Am I missing something?

[weber-s]

Hello, What's your version of matplotlib and windrose ? It works fine on matplotlib==3.3.4 and windrose==1.9.0

[MonkeyKingz]

Hello, Im having the same issue. Im using matplotlib 3.7.2 and windrose 1.7.0 since anaconda(spyder) doesn't have the windrose 1.9.0. Can someone help?

[cgadal]

It seems that ax._get_axis_list() has been removed in recent versions of matpotlib.

Use instead:

import numpy as np
import matplotlib.pyplot as plt

N = 500
ws = np.random.random(N) * 6
wd = np.random.random(N) * 360

from windrose import WindroseAxes

ax = WindroseAxes.from_ax()
a = ax.bar(wd, ws, normed=True, opening=0.8, edgecolor="white")
ax.set_legend()

for axis in [ax.get_xaxis(), ax.get_yaxis()]:
    axis.set_zorder(-2000)

plt.show()

Note that this pushed the whole xaxis at zorder = -2000, not only just the gridlines. Interestingly, this should only affect the gridlines:

for line in ax.get_xgridlines() + ax.get_ygridlines():
    line.set_zorder(-2000)
    line.set_color('r')

but in fact, does not change the zorder of the gridlines. It will however change their colour (you can also change any line properties this way.

[MonkeyKingz]

Thank you very much @Cgadal ! Problem solved :)