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New posts in data.table

How to aggregate a data.frame on both row and column names based on a hierarchical dictionary name structure?

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Reshaping data table to make column names into row names

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How to do operations on list columns in an R data.table to output another list column?

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How to order rows by conditions in other columns in r?

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Translating dplyr to data.table

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r - Efficiently create variable indicating if date variable precedes event (by group)

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Reclassify select columns in Data Table

r data.table

Calculate multiple aggregations on several variables using lapply(.SD, ...)

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Number of firms per year using dplyr or datatable

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Efficient coding to make time increments 'finer' from minutes to seconds

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R data.table group by multiple columns into 1 column and sum

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lapply and do.call running very slowly?

r data.table lapply do.call

Create a new column with non-null columns' names

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calculating sum of previous 3 rows in R data.table (by grid-square)

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data.table assignment involving factors

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How to define data.table keys for fastest aggregation using multiple keys

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how can I mutate in dplyr without losing order?

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