Seaborn countplot does not accept both x and y arguments in Python

Question

I want to plot the frequencies of a variable y by a variable x and to that effect I am using the seaborn.countplot() method. However I am getting an error message.

For a reproducible example see below:

surveys_species_by_plot_sample

    plot_id taxa
0   1   Bird
1   1   Rabbit
2   1   Rodent
3   2   Bird
4   2   Rabbit
5   2   Reptile
6   2   Rodent
7   3   Bird
8   3   Rabbit
9   3   Rodent

The intent now is to plot the number of taxa (Birds, Rabbits etc) by plot_id. I am using the following command:

sn.countplot(x = "plot_id", y = "taxa", data = surveys_species_by_plot_sample,
             palette = sn.color_palette(palette = ["SteelBlue" , "Salmon"], n_colors = 4))

I am getting the following error message:

TypeError: Cannot pass values for both `x` and `y`

I do not understand, since the documentation states that both x and y variables can be passed to the function:

Parameters: x, y, hue : names of variables in data or vector data, optional Inputs for plotting long-form data. See examples for interpretation.

data : DataFrame, array, or list of arrays, optional Dataset for plotting. If x and y are absent, this is interpreted as wide-form. Otherwise it is expected to be long-form.

Your advice will be appreciated.

CodeCupboard · Accepted Answer · 2017-11-29 08:04:04Z

3

Reading examples in the Documentation, you can only pass x or y, not both. Stating X or Y changes the orientation of your chart. You might need a different chart type.

answered Nov 29, 2017 at 8:04

CodeCupboard

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tensai · Accepted Answer · 2022-10-19 19:04:00Z

2

If you want to use both the x and y in your plot, you can't use countplot, instead you should use sn.barplot :)

sn.barplot(x = "plot_id", y = "taxa", data = surveys_species_by_plot_sample, palette = sn.color_palette(palette = ["SteelBlue" , "Salmon"], n_colors = 4))

answered Oct 19, 2022 at 19:04

tensai

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