Add argmax to GroupBy object #5503

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cancan101 opened this issue Nov 13, 2013 · 1 comment

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cancan101 commented Nov 13, 2013

See SO question: http://stackoverflow.com/questions/19879790/indexing-dataframe-by-argmax-of-column-over-another-column

I was thinking something along the lines of:

interesting_rows = raw_data.groupby(["city"]).argmax(over='obt_dt')

which would pull out the row in each group that has the max value in the column referred to by the over keyword,

The text was updated successfully, but these errors were encountered:

cancan101 mentioned this issue

nth groupby method on DataFrame #5552

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jreback commented Jan 25, 2014

is is just idxmax which is defined already, the over kw I am confused on. Maybe if you have a complete example it would be more clear.

jreback closed this as completed

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