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python Programming Glossary: multiindex

Converting a Pandas GroupBy object to DataFrame

http://stackoverflow.com/questions/10373660/converting-a-pandas-groupby-object-to-dataframe

Out 19 pandas.core.frame.DataFrame In 20 g1.index Out 20 MultiIndex 'Alice' 'Seattle' 'Bob' 'Seattle' 'Mallory' 'Portland' 'Mallory'..

how to filter the dataframe rows of pandas by “within”/“in”?

http://stackoverflow.com/questions/12065885/how-to-filter-the-dataframe-rows-of-pandas-by-within-in

of python pandas rpt class 'pandas.core.frame.DataFrame' MultiIndex 47518 entries '000002' '20120331' to '603366' '20091231' Data.. rpt 'STK_ID' '600809' class 'pandas.core.frame.DataFrame' MultiIndex 25 entries '600809' '20120331' to '600809' '20060331' Data columns..

Benefits of panda's multiindex?

http://stackoverflow.com/questions/13226029/benefits-of-pandas-multiindex

learned that I can use DataFrame.groupby without having a MultiIndex to do subsampling cross sections. On the other hand when I have.. cross sections. On the other hand when I have a MultiIndex on a DataFrame I still need to use DataFrame.groupby to do sub.. to do sub sampling cross sections. So what is a MultiIndex good for apart from the quite helpful and pretty display of..

Aligning DataFrames with same columns, different index levels

http://stackoverflow.com/questions/13940753/aligning-dataframes-with-same-columns-different-index-levels

a simple Index on a Land Use columns. concentration has a MultiIndex on Land Use and Parameter . import pandas import StringIO conc_string.. across a level matching Index values on the passed MultiIndex level In 39 concentration.div weight level 'Land Use' Out 39..

Prepend a level to a pandas MultiIndex

http://stackoverflow.com/questions/14744068/prepend-a-level-to-a-pandas-multiindex

a level to a pandas MultiIndex I have a DataFrame with a MultiIndex created after some grouping.. a level to a pandas MultiIndex I have a DataFrame with a MultiIndex created after some grouping import numpy as np import pandas.. Output a3 b4 0.002009 How do I prepend a level to the MultiIndex so that I turn it into something like Output Vals Output FirstLevel..

How to update a subset of a MultiIndexed pandas DataFrame

http://stackoverflow.com/questions/17552997/how-to-update-a-subset-of-a-multiindexed-pandas-dataframe

to update a subset of a MultiIndexed pandas DataFrame I'm using a MultiIndexed pandas DataFrame.. a subset of a MultiIndexed pandas DataFrame I'm using a MultiIndexed pandas DataFrame and would like to multiply a subset of the.. by a certain number. It's the same as this but with a MultiIndex. d pd.DataFrame 'year' 2008 2008 2008 2008 2009 2009 2009 2009..