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New posts in data.table

R data.table: using fread on all .csv files in folder skipping the last line of each

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Non-equi join, then summarize by group

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Widening a dataframe to get monthly sums of revenue for all unique values of catogorical columns in R

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pandas dataframe equivalent to R data.table by

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Grouping variables select first row (keep one column), last row (keep different column)

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Replacing occurrences of a number in specific columns from a data table

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Grouped mean of difftime fails in data.table

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Improve efficiency for removing duplicate values per row and shift values in R

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Method to operate on each row of data.table without using apply function

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How to group data.table by several columns consecutively

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Fill NA values with sequence by group

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Different results when subsetting data.table columns with numeric indices in different ways

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How to apply multiple functions to multiple columns within by? [duplicate]

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What is the equivalent of mutate_at (dplyr) in data.table?

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Filling missing values based on a relationship with another table

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R: Compare character strings across multiple columns to character string in a single column by row

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Count rows in data table with certain values by group

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R Shuffle and randomize columns of a data table

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R: unequi join with merge function

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Fastest way to subset - data.table vs. MySQL

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