dataframe

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Count number of occurences in past 14 days of certain value
user_129053790
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40
pandas dataframe python
Counting unique list items
user_63954850
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4
4
94
data.table dataframe aggregate r list
How to make a rank column in R
Admin1
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278
rank data-manipulation dataframe r
Pandas - modify descriptives output from groupby.agg
user_106786260
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1
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43
pandas dataframe aggregate statistics python
Transform long-to-wide database spreading data on multiple columns in R
user_13708890
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1
1
40
reshape dataframe r
Subsetting dataframe with grep
user_130715180
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2
2
51
subset dataframe r
Is it possible to use numpy.select() with a DataFrame where the choicelist depends on one or more column
user_183975760
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1
1
168
pandas dataframe vector numpy python
How to match column value in a dataframe based on condition in another dataframe?
user_82521930
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1
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469
tidyr dataframe r
Remove extra column level from dataframe
user_65297200
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2
1
170
multi-index pandas dataframe python
How to get first and last value of each group in pandas with no group by column?
user_180674120
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49
pandas dataframe python
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