"None-None" at bottom of a heatmap

Heatmap places None-None at bottom and I have no idea how to get rid of it:

Versions:

• python 2.7
• seaborn - latest for 2.7

image

Code:

plt.figure(figsize=fig_size)
ax = plt.gca()
ax.set_title('Monthly returns, %', fontweight='bold')
heatmap(returns, xticklabels=[i[1] for i in list(returns.columns)], annot=True, fmt='0.3f', annot_kws={'size': 8}, alpha=1.0, center=0.0, cbar=False, cmap=cm.RdYlGn, ax=ax, robust=True)

[mwaskom]

This is an xlabel, which is derived from the name(s) of the column index on your dataframe. Your transformations are producing a multiindex dataframe where none of the levels have names. No label is generated for an unnamed single index (because matplotlib ignores None) but that is not the case for multiindices. Your options are

• Give your multiindex meanginful level names so that you get a meaningful x label
• Rework your transformation so you do not end up with multiindex columns (I don’t think you want them here anyway)
• Remove the x label after plotting with ax.set_xlabel(None).

[talaikis]

This is an xlabel, which is derived from the name(s) of the column index on your dataframe. Your

Yep, ax.set_xlabel('') effectively removes it. Thank you!!