How to format pandas dataframe in order to just keep one row per id?
Question:
I have such a pandas dataframe:
id feature1 feature feature3
A 1 0 0
A 0 1 0
B 0 1 0
B 1 0 0
B 0 0 1
C 0 0 1
So, this means this is a one hot encoded dataframe. I would like to get it now in a another format in order to just have one row per id:
id feature1 feature feature3
A 1 1 0
B 1 1 1
C 0 0 1
How can I do this?
Answers:
Use groupby.max:
out = df.groupby('id', as_index=False).max()
output:
id feature1 feature feature3
0 A 1 1 0
1 B 1 1 1
2 C 0 0 1
I have such a pandas dataframe:
id feature1 feature feature3
A 1 0 0
A 0 1 0
B 0 1 0
B 1 0 0
B 0 0 1
C 0 0 1
So, this means this is a one hot encoded dataframe. I would like to get it now in a another format in order to just have one row per id:
id feature1 feature feature3
A 1 1 0
B 1 1 1
C 0 0 1
How can I do this?
Use groupby.max:
out = df.groupby('id', as_index=False).max()
output:
id feature1 feature feature3
0 A 1 1 0
1 B 1 1 1
2 C 0 0 1