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New posts in data.table

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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Find rows with a given difference between values in a column

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R - Need help speeding up a for loop

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R data.table subsetting a subset

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Potential problems from over-allocating truelength more than 1000 times

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accessing Y columns with duplicated names in j of X[Y, j] merges

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Fastest way to subset - data.table vs. MySQL

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Is my way of duplicating rows in data.table efficient?

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