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DOC: Add how to calculate month-start to cookbook #7455

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Jun 14, 2014
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DOC: Add how to calculate month-start to cookbook #7455

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7 changes: 7 additions & 0 deletions doc/source/cookbook.rst
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Expand Up @@ -269,6 +269,13 @@ Turn a matrix with hours in columns and days in rows into a continuous row seque
`Dealing with duplicates when reindexing a timeseries to a specified frequency
<http://stackoverflow.com/questions/22244383/pandas-df-refill-adding-two-columns-of-different-shape>`__

Calculate the first day of the month for each entry in a DatetimeIndex

.. ipython:: python

dates = pd.date_range('2000-01-01', periods=5)
dates.to_period(freq='M').to_timestamp()

.. _cookbook.resample:

Resampling
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