When enabling log scale for the bar plot, the bars are not plotted properly and the plot is empty.

See also this bug report#163 and the corresponding fix#2147.

Commitdda42ab changed the default value ofnonpos parameter fromclip tomask which introduced the issue. I cannot tell whetherclip should be default behavior ormask doesn't work as intended.

importmatplotlib.pyplotaspltplt.bar(x=[1,2,3],height=[1000,2,3])plt.yscale("log")plt.show()

Result is an empty plot. Saving to an image file or PDF doesn't make a change.

Adding

plt.yscale("log",nonposy="clip")

fixes that issue.

Additional info:
Latest Miniconda
Various platforms (Ubuntu 16.04, Windows 10, macOS)
Matplotlib 2.1.0, Qt5Agg (from Anaconda)