Python Matplotlib Box plot -

this dataframe:

{'parameter': {0: 'a', 1: 'a', 2: 'a', 3: 'a', 4: 'a', 5: 'a', 6: 'a', 7: 'a'},  'site': {0: 's1',   1: 's2',   2: 's1',   3: 's2',   4: 's1',   5: 's2',   6: 's1',   7: 's2'},  'value': {0: 2.3399999999999999,   1: 2.6699999999999999,   2: 2.5600000000000001,   3: 2.8900000000000001,   4: 3.4500000000000002,   5: 4.4500000000000002,   6: 3.6699999999999999,   7: 4.5599999999999996}} 

i trying plot boxplot of parameter site. easiest way it? additional question if have more 1 parameter, easiest way plot boxplot using matplotlib parameter? thank you

you're going want use dataframe.boxplot method , group "parameter" , "site" columns.

import matplotlib.pyplot plt pandas import dataframe  df = dataframe({'parameter': ['a',]*8,                  'site': ['s1', 's2', 's1', 's2', 's1', 's2', 's1', 's2'],                 'value':  [2.34, 2.67, 2.56, 2.89, 3.45, 4.45, 3.67, 4.56]})  df.boxplot(by=['parameter', 'site']) plt.show() 

if want plot specific column of data, can use column keyword argument boxplot.

# plot single value df.boxplot(column='value', by=['parameter', 'site'])  # plot multiple values df.boxplot(column=['value', 'othervalue'], by=['parameter', 'site'])