Reducing the distance between two boxplots

You can either change the aspect ratio of plot or use the widths kwarg (doc) as such:

ax.boxplot([values_cg, values_eg], widths=1)

to make the boxes wider.

Try changing the aspect ratio using

ax.set_aspect(1.5) # or some other float

The larger then number, the narrower (and taller) the plot should be:

a circle will be stretched such that the height is num times the width. aspect=1 is the same as aspect=’equal’.

http://matplotlib.org/api/axes_api.html#matplotlib.axes.Axes.set_aspect

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