Rotate Y-axis categorical label in Seaborn plot?

Question

To borrow some default code with default libraries (extra helpful that you have to load the data explicitly, instead of having it polluting globals like in R...):

sns.set(style="whitegrid") tips = sns.load_dataset("tips") ax = sns.violinplot(y="day", x="total_bill", data=tips)

This produces the following image:

I want to rotate the day of the week labels 90 degrees such that the baseline for those labels matches the word day, also on the Y axis.

I've looked at the answers already here, but they seem primarily to deal with (1) the X axis and (2) the first-order Y-axis label (here, the day label) rather than the Y-axis sub-labels (here, the days of the week).

You can take any answer for xticklabels and replace the x by a y. — ImportanceOfBeingErnest
– ImportanceOfBeingErnest, Commented Apr 3, 2019 at 21:21
Tried that, ax.set_yticklabels(rotation=90) yields an error. Answer below, accepted, also notes and corrects for that. — ifly6
– ifly6, Commented Apr 4, 2019 at 12:33

Anshuman Dikhit · Accepted Answer · 2019-04-03 22:07:19Z

Most stackoverflow answers would recommend using ax.set_yticklabels(rotation = 90), while this does work, it also requires you to provide the positional parameter labels (failing to provide this will give you a TypeError). I'd recommend using plt.yticks(rotation = 90). This is how it'd look:

import seaborn as sns import matplotlib.pyplot as plt sns.set(style="whitegrid") tips = sns.load_dataset("tips") ax = sns.violinplot(y="day", x="total_bill", data=tips) plt.yticks(rotation = 90) plt.show(ax)

The recommended way would rather be ax.tick_params(axis="y", rotation=90). Which other answers use set_yticklabels?

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