How to pivot a dataframe in Pandas? [duplicate]
I have a table in csv format that looks like this. I would like to transpose the table so that the values in the indicator name column are the new columns,
Indicator Country Year Value
1 Angola 2005 6
2 Angola 2005 13
3 Angola 2005 10
4 Angola 2005 11
5 Angola 2005 5
1 Angola 2006 3
2 Angola 2006 2
3 Angola 2006 7
4 Angola 2006 3
5 Angola 2006 6
I would like the end result to like like this:
Country Year 1 2 3 4 5
Angola 2005 6 13 10 11 5
Angola 2006 3 2 7 3 6
I have tried using a pandas data frame with not much success.
print(df.pivot(columns = 'Country', 'Year', 'Indicator', values = 'Value'))
Any thoughts on how to accomplish this?
You can use pivot_table
:
pd.pivot_table(df, values = 'Value', index=['Country','Year'], columns = 'Indicator').reset_index()
this outputs:
Indicator Country Year 1 2 3 4 5
0 Angola 2005 6 13 10 11 5
1 Angola 2006 3 2 7 3 6
This is a guess: it's not a ".csv" file, but a Pandas DataFrame imported from a '.csv'.
To pivot this table you want three arguments in your Pandas "pivot". e.g., if
df
is your dataframe:
table = df.pivot(index='Country',columns='Year',values='Value')
print (table)
This should should give the desired output.