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Data manipulation in pandas on monthly, quarterly and annual level on multiple columns...

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Iterating across sequences of columns (of same crop-related data) to build tidy rbind dataset in R...

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In R, expand a table, splitting apart rows distinguished internally...

Merge rows with same index and prioritize column values...

Merge columns in Python/Pandas of Dataframe1 from Dataframe2 only if specific column contains at lea...

pandas group many columns to one column where every cell is a list of values...

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Pivot a character vector to a data.frame with specified number of columns...

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Extract the year-month-day from xts...

Numbering IDs based on group R...

Pandas aggreagte each column with 4 previous rows...

How to do a sort of mixed values in R...

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filter specific values in dataframe with unique prefix in column name (e.g. 'UniqueID_commonsuff...

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How to convert a python datetime.datetime to excel serial date number...