Pandas: Boxplot Of One Column Based On Another Column

Say I have a dataframe like the following: my_dataframe: Age Group 0 31 A 1 24 A 2 25 A 3 36 A 4 50 NaN 5 27 A 6 49 A 7 24 A 8 63 A 9 25 A 10 65

Solution 1:

Misread 1st time so gave answer for histograms... keeking that below. for boxplot the code is:

bp = df.boxplot(by='Group')

suptitle('Bla Bla')

to change or get rid of the automatically generated top Title.

Might be a more elegant way but the following works for histograms:

df[df.Group =='A'].Age.hist()
df[df.Group =='B'].Age.hist()
df[df.Group =='C'].Age.hist()

http://pandas.pydata.org/pandas-docs/dev/visualization.html has some fancy syntax to do this as well. But since only have 3 groups the simple solution is probably sufficient.