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New posts in data.table

Order factor levels in order of appearance in data set

r data.table r-factor

R: data.table, set first and last value of a group to NA

r data.table

How can I perform a "setdiff" merge using data.table?

r data.table

Replace NA with 0, only in numeric columns in data.table

r data.table numeric na

R: Calculate means for subset of a group

r aggregate data.table

Select a sequence of columns: `:` works but not `seq`

r data.table

reshape wide to long using data.table with multiple columns

r data.table

data.table with two string columns of set elements, extract unique rows with each row unsorted

r duplicates set data.table unique

Group by one column, select row with minimum in one column for every pair of columns

r data.table

R data.table sum of group subset using dates

r data.table

subset row in data.table by id

r data.table

Calculate between columns in data.table or dplyr?

r data.table dplyr

Efficiently convert a date column in data.table

r date data.table

Subset R data frame contingent on the value of duplicate variables

r dataframe subset plyr data.table

Index unique values in data.table

r data.table

How to apply a function to a subset of data.table using by and exposing all columns to the function?

r data.table

r count combinations of elements in groups

r data.table

Join two data tables and use only one column from second dt

r join merge data.table

Conditional NA filling by group

r dplyr data.table plyr na

Am I using plyr right? I seem to be using way too much memory

r plyr data.table
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