6 Answered Questions

15 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

5 Answered Questions

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

3 Answered Questions

5 Answered Questions

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

1 Answered Questions

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
  • 114029 View
  • 722 Score
  • 3 Answer
  • Tags:   r data.table dplyr

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
  • 41791 View
  • 70 Score
  • 6 Answer
  • Tags:   r data.table

2 Answered Questions

4 Answered Questions

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

1 Answered Questions

9 Answered Questions

[SOLVED] Fastest way to replace NAs in a large 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
  • 35337 View
  • 109 Score
  • 2 Answer
  • Tags:   r data.table

6 Answered Questions

[SOLVED] Getting the top values by group

  • 2015-01-04 13:36:19
  • Richie Cotton
  • 68938 View
  • 76 Score
  • 6 Answer
  • Tags:   r data.table dplyr

6 Answered Questions

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

  • 2012-05-28 20:41:07
  • Florian Oswald
  • 45646 View
  • 144 Score
  • 6 Answer
  • Tags:   r data.table

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
  • 8413 View
  • 73 Score
  • 2 Answer
  • Tags:   r data.table

2 Answered Questions

[SOLVED] Left join using data.table

  • 2016-01-04 19:11:08
  • lord12
  • 27276 View
  • 39 Score
  • 2 Answer
  • Tags:   r merge data.table

2 Answered Questions

6 Answered Questions

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

2 Answered Questions

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

1 Answered Questions

[SOLVED] .EACHI in data.table?

3 Answered Questions

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

  • 2013-08-01 20:16:34
  • mrkilinc
  • 25077 View
  • 30 Score
  • 3 Answer
  • Tags:   r data.table rbind

7 Answered Questions

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

  • 2013-02-04 14:59:49
  • Corone
  • 63880 View
  • 72 Score
  • 7 Answer
  • Tags:   r data.table

5 Answered Questions

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

  • 2012-11-14 17:18:44
  • jamborta
  • 165045 View
  • 140 Score
  • 5 Answer
  • Tags:   r data.table

1 Answered Questions

[SOLVED] Summarizing multiple columns with data.table

  • 2013-05-13 01:41:45
  • Tahnoon Pasha
  • 54930 View
  • 52 Score
  • 1 Answer
  • Tags:   r data.table

5 Answered Questions

[SOLVED] Faster version of combn