Pandas - Creating Difference Matrix from Data Frame

Question

I\'m trying to create a matrix to show the differences between the rows in a Pandas data frame.

import pandas as pd

data = {\'Country\':[\'GB\',\'JP\',\'US\         


        

Answer 1

I try improve Divakar comment:

a = np.column_stack([df['Country'], np.subtract.outer(*[-df.Values]*2)])

df = pd.DataFrame(a, columns=['Country'] + df['Country'].tolist())
print (df)
  Country    GB    JP    US
0      GB     0 -30.7 -14.5
1      JP  30.7     0  16.2
2      US  14.5 -16.2     0