CODEWITHSUNDEEP
pythonpandas
user308827
user308827

Reputation: 22031

Reverting from multiindex to single index dataframe in pandas

                       NI
YEAR MONTH datetime        
2000 1     2000-01-01   NaN
           2000-01-02   NaN
           2000-01-03   NaN
           2000-01-04   NaN
           2000-01-05   NaN

In the dataframe above, I have a multilevel index consisting of the columns:

names=[u'YEAR', u'MONTH', u'datetime']

How do I revert to a dataframe with 'datetime' as index and 'YEAR' and 'MONTH' as normal columns?

Upvotes: 82

Views: 189970

Answers (2)

Shujaath Khan
Shujaath Khan

Reputation: 1384

Another simple way would be to set columns for dataframe

consolidated_data.columns=country_master

ref: https://riptutorial.com/pandas/example/18695/how-to-change-multiindex-columns-to-standard-columns

Upvotes: 8

EdChum
EdChum

Reputation: 394389

pass level=[0,1] to just reset those levels:

dist_df = dist_df.reset_index(level=[0,1])

In [28]:
df.reset_index(level=[0,1])

Out[28]:
            YEAR  MONTH  NI
datetime                     
2000-01-01  2000      1   NaN
2000-01-02  2000      1   NaN
2000-01-03  2000      1   NaN
2000-01-04  2000      1   NaN
2000-01-05  2000      1   NaN

you can pass the label names alternatively:

df.reset_index(level=['YEAR','MONTH'])

Upvotes: 100

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