Bug report

Bug summary

When using a combination ofplt.subplots withgridspec_kw/width_ratios along withplt.subplot2grid, some of the axes disappear when one of the width ratios is (in this case) below 0.73.

Code for reproduction

importmatplotlib.pyplotaspltfig,ax=plt.subplots(2,3,sharex=True,sharey=True,gridspec_kw={'width_ratios':[1,1,0.7]})axi=plt.subplot2grid((2,3),(0,2),rowspan=2)plt.show()

Actual outcome

Note that the axes only disappear with the call tosubplot2grid. If I remove that line, all axes appear.

Expected outcome

Ifwidth_ratios is instead[1,1,0.8], all of the axes appear.

I can achieve the desired width ratios if I useGridSpec directly instead of using the wrappers, but it would be nice if the wrappers didn't fail based on thewidth_ratios parameter.

Matplotlib version

• Operating system: Windows 10.0.15063
• Matplotlib version: 2.1.0
• Matplotlib backend: module://ipykernel.pylab.backend_inline
• Python version: 3.6.3
• IPython version: 6.1.0
• Jupyter notebook server version: 5.4.1

mabplotlib and python installed via conda.