Merge overlapping ranges into unique groups, in dataframe

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  4. Assign multiple columns using := in data.table, by group
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  8. Replace logical values (TRUE / FALSE) with numeric (1 / 0)
  9. Cleaning `Inf` values from an R dataframe
  10. write.csv for large data.table
  11. DT[!(x == .)] and DT[x != .] treat NA in x inconsistently
  12. Convert a data frame to a data.table without copy
  13. What you can do with a data.frame that you can’t with a data.table?
  14. Calculate the mean by group
  15. Apply a function to every specified column in a data.table and update by reference
  16. Convert row names into first column
  17. How do I extract a single column from a data.frame as a data.frame?
  18. Rename multiple columns by names
  19. Call apply-like function on each row of dataframe with multiple arguments from each row
  20. data.table join then add columns to existing data.frame without re-copy
  21. Converting a data frame to xts
  22. Interpolate NA values in a data frame with na.approx
  23. How to delete columns that contain ONLY NAs?
  24. Calculate multiple aggregations on several variables using lapply(.SD, …)
  25. How to sort a data frame by date
  26. from data table, randomly select one row per group
  27. How to change type of target column when doing := by group in a data.table in R?
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  29. R: Split unbalanced list in data.frame column
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