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Filtering data relative to first and last occurance of an event...

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data cleaning - conversion to tidyverse...

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change selected columns based on regex to percentage...

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Transform complex column (dictionary-like) into multiple ones...

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Of two rows eliminate the one with more NAs...

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Munging dates in R...

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Grouping pandas dataframe and collecting multiple values into sets...

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dplyr Collapsing time periods...

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How to efficiently rearrange pandas data as follows?...

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split vector or data.frame into intervals by condition and print interval's first and last value...

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Regex help for find and replace...

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Transform a folder of CSV files the same way, then output multiple dataframes with python...

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Subsetting using MultiIndex with Time...

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Retrieve a flattened array of values taken from an object array that exists within a top-level objec...

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print index and value if value is str in a numeric data type column pandas dataframe...

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How to replace missing data in R with median data based on a condition...

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Python/Pandas: Grouping and counting records by date and ID...

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Converting pandas strings column to datetime with ocassionally missing hour part...

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Python pandas: pivot certain variables in wide-form DataFrame...

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