How to add values into columns in pandas
Question:
How can I add the values from column X and Y to X2 and Y2 using pandas dataframework? For example I want the X and Y value of Brad to be added into the X2 and Y2 column of Anton and for Mikel to be added to X2 and Y2 of Brad and so on till the end.
Answers:
You are looking for Series.shift():
df['X2'] = df['X'].shift(-1)
df['Y2'] = df['Y'].shift(-1)
Note that the last row will be NaN:
Player X Y X2 Y2
0 Anton 49.5 50.5 36.4 44.5
1 Brad 36.4 44.5 20.3 30.7
2 Mikel 20.3 30.7 10.0 44.4
3 Jimmy 10.0 44.4 NaN NaN
How can I add the values from column X and Y to X2 and Y2 using pandas dataframework? For example I want the X and Y value of Brad to be added into the X2 and Y2 column of Anton and for Mikel to be added to X2 and Y2 of Brad and so on till the end.
You are looking for Series.shift():
df['X2'] = df['X'].shift(-1)
df['Y2'] = df['Y'].shift(-1)
Note that the last row will be NaN:
Player X Y X2 Y2
0 Anton 49.5 50.5 36.4 44.5
1 Brad 36.4 44.5 20.3 30.7
2 Mikel 20.3 30.7 10.0 44.4
3 Jimmy 10.0 44.4 NaN NaN