Closed
Description
Bug report
secondary_xaxis (and secondary_yaxis?) doesn't seem to use formatters.
Code for reproduction
import matplotlib.pyplot as plt
import numpy as np
fig, axs = plt.subplots(figsize=(0.6*4,0.6*3))
y = np.random.rand(10)
x = np.linspace(30,200,num=10)
p = plt.plot(x, y, marker='o', markersize=3)
plt.xscale("log")
def m2rho(m):
return 1 / m * 1000
def rho2m(rho):
return 1 / rho * 1000
secax = axs.secondary_xaxis('top', functions=(m2rho, rho2m))
from matplotlib.ticker import ScalarFormatter, NullFormatter
for axis in [axs.xaxis, secax.xaxis]:
axis.set_major_formatter(ScalarFormatter())
axis.set_minor_formatter(NullFormatter())
axs.set_xticks([50, 100, 200])
secax.set_xticks([20,10,5])
plt.tight_layout()
plt.show()Actual outcome
Expected outcome
The top axis should be formatted similarly to the bottom (first) x-axis.
Matplotlib version
- Operating system: Ubuntu 18.04
- Matplotlib version: 3.1.1
- Matplotlib backend: Qt5Agg
- Python version: 3.7.4