How to create multiple boxplots within a dataframe?-CodePudding

I am new to Python and trying to plot multiple boxplots from a dataframe.

My dataframe is:

Date     A  B  C  D  E
01-Jan   1  3  6  6  1
01-Feb   2  4  7  4  2
01-Mar   3  5  8  2  9

I want to create 5 boxplots with where each boxplot represents an individual letter. How can I do it within a graph? Is there a systematic way to do when I have 100 columns so I don't have to type the column names for 100 times?

CodePudding user response：

you can use

Or you can convert df to dict then plot boxplots like below:

import pandas as pd
import matplotlib.pyplot as plt

 
df = pd.DataFrame({'Date': ['01-Jan', '01-Feb', '01-Mar'],'A': [1,2,3],
                   'B': [3,4,5],'C': [6,7,8],'D': [6,4,2],'E': [1,2,9],})

df = df.drop('Date',1)
dct = df.to_dict('list')

labels = dct.keys()
plt.boxplot(dct.values())
plt.xticks(range(1, len(labels)   1), labels)
plt.show()

Output:

CodePudding user response：

Import the packages

import pandas as pd
import matplotlib.pyplot as plt

To create the boxplot (requires pandas)

df.boxplot(column=list(df.columns))  # All columns
df.boxplot(column=list(df[['B', 'D']].columns))  # Selected columns
df.boxplot(column=list(df.drop(['B', 'D'], axis=1).columns))  # Drop columns

To show the plot (requires matplotlib)

plt.show()

Link for more info
https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.boxplot.html