Let’s check how to make a countplot in Seaborn. I’ll load taxis built-in data to show you countplot in details.
The full seaborn.countplot consist from several parameters:
(*, x=None, y=None, hue=None, data=None,
order=None, hue_order=None, orient=None,
color=None, palette=None, saturation=0.75,
dodge=True, ax=None, **kwargs)
I will share my knowledge to explain you parameters of countplot Seaborn method. It will help you to create a move advance Seaborn countplot.
This is the completed code to create a counterplot in Python using the Seaborn module.
import seaborn as sns import matplotlib.pyplot as plt df = sns.load_dataset('taxis') sns.countplot(x='passengers', data=df) plt.show()
To flip the chart just change the x argument to y.
You can also use a orient parameter and set “v” for a vertical alignment or “h” for a horizontal one.
To increase the number of data in the chart you may use the hue parameter. It is adding an additional sets of data to your counterplot graph. I decided to visualize payments with color of the taxi to check the relationship between them.
sns.countplot(x='payment', data=df, hue='color')
The hue_order parameter gives you the possibility of changing the order of a hue. I used simply df[‘color’].value_counts().index[::-1] structure to change the order by index in the reverse order.
sns.countplot(x='payment', data=df, hue='color', hue_order = df['color'].value_counts().index[::-1])
To sort the data series use the order parameter. I picked df[‘passengers’].value_counts().index to sort counts.
sns.countplot(x='passengers', data=df, order=df['passengers'].value_counts().index)
Countplot ascending order
To sort the data series in ascending order, add the reverse indexing using index[::-1].
sns.countplot(x='passengers', data=df, order=df['passengers'].value_counts().index[::-1])
It is also possible to change the color of your python countplot. I set the color parameter to blue.
sns.countplot(x='passengers', data=df, color='blue')
If one color is not enough for you or you want to make your chart look more attractive, use the palette parameter. I dediced to use the inferno.
sns.countplot(x='passengers', data=df, palette='inferno')
For those who care about details, you can also change the color saturation. The default is 0.75. Watch the saturation change as you lower it to 0.2.
sns.countplot(x='passengers', data=df, saturation=0.2)
To stack data in a countplot, use a dodge. By default, dodge is set to true. If you change this parameter to false, the count graph will change like this. The data has been accumulated.
sns.countplot(x='payment', data=df, hue='color', dodge=False)
These are all the parameters of the countplot method that I wanted to discuss for you. I hope you will improve your charting skills at Seaborn with this python course.