6 Answered Questions

14 Answered Questions

[SOLVED] Replacing NAs with latest non-NA value

2 Answered Questions

1 Answered Questions

[SOLVED] Subset by group with data.table

3 Answered Questions

[SOLVED] Overlap join with start and end positions

3 Answered Questions

5 Answered Questions

[SOLVED] Extract row corresponding to minimum value of a variable by group

5 Answered Questions

[SOLVED] How to create a lag variable within each group?

1 Answered Questions

2 Answered Questions

6 Answered Questions

[SOLVED] How to apply same function to every specified column in a data.table

  • 2013-05-30 21:44:35
  • Dean MacGregor
  • 34140 View
  • 63 Score
  • 6 Answer
  • Tags:   r data.table

3 Answered Questions

[SOLVED] data.table vs dplyr: can one do something well the other can't or does poorly?

  • 2014-01-29 15:21:45
  • BrodieG
  • 97199 View
  • 655 Score
  • 3 Answer
  • Tags:   r data.table dplyr

1 Answered Questions

3 Answered Questions

[SOLVED] Is there a dplyr equivalent to data.table::rleid?

8 Answered Questions

[SOLVED] Fastest way to replace NAs in a large data.table

6 Answered Questions

[SOLVED] How to delete a row by reference in data.table?

  • 2012-05-28 20:41:07
  • Florian Oswald
  • 41832 View
  • 135 Score
  • 6 Answer
  • Tags:   r data.table

2 Answered Questions

[SOLVED] What is the purpose of setting a key in data.table?

  • 2013-11-18 02:56:49
  • Wet Feet
  • 31256 View
  • 100 Score
  • 2 Answer
  • Tags:   r data.table

5 Answered Questions

[SOLVED] Getting the top values by group

  • 2015-01-04 13:36:19
  • Richie Cotton
  • 53114 View
  • 61 Score
  • 5 Answer
  • Tags:   r data.table dplyr

4 Answered Questions

[SOLVED] Fastest way to add rows for missing time steps?

2 Answered Questions

[SOLVED] Using data.table package inside my own package

  • 2012-05-10 03:18:29
  • ruser
  • 7292 View
  • 63 Score
  • 2 Answer
  • Tags:   r data.table

2 Answered Questions

2 Answered Questions

[SOLVED] Left join using data.table

  • 2016-01-04 19:11:08
  • lord12
  • 18362 View
  • 26 Score
  • 2 Answer
  • Tags:   r merge data.table

2 Answered Questions

[SOLVED] Why is rbindlist "better" than rbind?

1 Answered Questions

[SOLVED] .EACHI in data.table?

6 Answered Questions

[SOLVED] Group by multiple columns and sum other multiple columns

5 Answered Questions

[SOLVED] Select multiple columns in data.table by their numeric indices

  • 2012-11-14 17:18:44
  • jamborta
  • 145997 View
  • 135 Score
  • 5 Answer
  • Tags:   r data.table

3 Answered Questions

[SOLVED] Efficient way to rbind data.frames with different columns

  • 2013-08-01 20:16:34
  • mrkilinc
  • 20671 View
  • 27 Score
  • 3 Answer
  • Tags:   r data.table rbind

3 Answered Questions

[SOLVED] Why does X[Y] join of data.tables not allow a full outer join, or a left join?

  • 2012-10-07 23:46:03
  • Douglas Clark
  • 26741 View
  • 109 Score
  • 3 Answer
  • Tags:   r join data.table

7 Answered Questions

[SOLVED] Use a value from the previous row in an R data.table calculation

  • 2013-02-04 14:59:49
  • Corone
  • 53388 View
  • 69 Score
  • 7 Answer
  • Tags:   r data.table

4 Answered Questions

[SOLVED] Proper/fastest way to reshape a data.table

  • 2011-08-01 17:27:10
  • Zach
  • 23288 View
  • 66 Score
  • 4 Answer
  • Tags:   r data.table