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New posts in data.table

R data.table value from previous row with conditional statement

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Assign categories from JSON column in data table

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Fast data.table column split to multiple rows based on delimiter [duplicate]

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How to bind data.table without increasing the memory consumption?

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Join data frames and select random row when there are multiple matches

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Speed up quantile calculation

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Within-group operations in R (not rolling sum)

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Combine list of dataframes into one dataframe and summarize in one step

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R perform calculations on groups for subset of rows

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Getting mean of multiple rows based on interval dataframe in R

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How do I use Group By with order function in R

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sort data.table by a column within each key

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How to summarize in R the number of first occurrences of a character string in a dataframe column?

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Count unique combinations in and summarize other columns in new one

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lapply with nested list

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data.table confusion using rollends argument of rolling join

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Counting combinations without destroying type

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rowwise iteration in r on a data table

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How do I count the numbers of occurrences for each group in a tidy data.table? [duplicate]

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R data table: strangely poor performance in subsetting

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