how to annotate for every subplot in seaborn facetgrid?

Question

I have created a facetgrid where columns are my years, x axis are months and Y axis is consumption levels. I have put an horizontal line showing the mean consumption level for every subplot. I also would like to state with an annotate what that mean number is for every column, here yearly data. Any ideas how to do it?

You should be using `sns.catplot` with `kind='bar'`. As per the documentation, it is not recommended to directly use [`FacetGrid`](https://seaborn.pydata.org/generated/seaborn.FacetGrid.html), — Trenton McKinney, Oct 12 '22 at 15:21
Asking because I don't know why I should not be using Facetgrid? — Oğuz Underwood, Oct 12 '22 at 15:36
It says right in the FacetGrid documentation in the **Warning** section — Trenton McKinney, Oct 12 '22 at 15:48

score 1 · Answer 1 · edited Oct 13 '22 at 16:31

1

Since you did not present any data, I applied your code using the data in the reference. I created a function to annotate the string and add a horizontal line since the function drawing the horizontal line is unknown.

import matplotlib.pyplot as plt
import seaborn as sns

colors = sns.color_palette()

# load seaborn sample dataset
flights = sns.load_dataset('flights')

def annotate(data, **kws):
    n = data.passengers.mean()
    ax = plt.gca()
    ax.text(.1, .8, "Mean = {:.1f}".format(n), transform=ax.transAxes)
    ax.axhline(y=n, color='red')
    
g2 = sns.catplot(flights, x='month', y='passengers', kind='bar', col='year', col_wrap=4, color=colors[0])
g2.map_dataframe(annotate)

edited Oct 13 '22 at 16:31

Trenton McKinney

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answered Oct 12 '22 at 14:41

r-beginners

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Thank you very much this has been quite useful. – Oğuz Underwood Oct 12 '22 at 15:36
Your question was unfortunately closed, but I have made a correction to resolve the error and change the color of the bar graph to one color. – r-beginners Oct 13 '22 at 01:45
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@Trenton McKinney Thanks for the correction. – r-beginners Oct 14 '22 at 09:10

how to annotate for every subplot in seaborn facetgrid?

1 Answers1