23 Answered Questions

[SOLVED] How to make a great R reproducible example?

  • 2011-05-11 11:12:02
  • Andrie
  • 197218 View
  • 2273 Score
  • 23 Answer
  • Tags:   r r-faq

12 Answered Questions

[SOLVED] How to join (merge) data frames (inner, outer, left, right)?

8 Answered Questions

[SOLVED] How to reshape data from long to wide format?

  • 2011-05-04 22:27:50
  • Steve
  • 95581 View
  • 163 Score
  • 8 Answer
  • Tags:   r reshape r-faq

3 Answered Questions

[SOLVED] Why are these numbers not equal?

5 Answered Questions

[SOLVED] Reshaping data.frame from wide to long format

6 Answered Questions

[SOLVED] How do I make a list of data frames?

10 Answered Questions

[SOLVED] How to sum a variable by group?

  • 2009-11-02 09:01:28
  • user5243421
  • 281456 View
  • 222 Score
  • 10 Answer
  • Tags:   r sorting r-faq

9 Answered Questions

[SOLVED] Grouping functions (tapply, by, aggregate) and the *apply family

  • 2010-08-17 18:31:12
  • grautur
  • 339989 View
  • 878 Score
  • 9 Answer
  • Tags:   r sapply tapply r-faq

5 Answered Questions

[SOLVED] How to convert a factor to integer\numeric without loss of information?

  • 2010-08-05 18:53:32
  • Adam SO
  • 553501 View
  • 439 Score
  • 5 Answer
  • Tags:   r casting r-faq

15 Answered Questions

[SOLVED] How to sort a dataframe by column(s)?

5 Answered Questions

[SOLVED] Split comma-separated column into separate rows

  • 2012-12-08 02:13:44
  • RoyalTS
  • 16991 View
  • 54 Score
  • 5 Answer
  • Tags:   r string split r-faq

9 Answered Questions

[SOLVED] How can I view the source code for a function?

  • 2013-10-07 13:58:00
  • Joshua Ulrich
  • 172223 View
  • 382 Score
  • 9 Answer
  • Tags:   r function r-faq

5 Answered Questions

[SOLVED] Dynamically select data frame columns using $ and a vector of column names

  • 2013-08-14 02:27:57
  • Samuel Song
  • 53872 View
  • 70 Score
  • 5 Answer
  • Tags:   r dataframe r-faq

4 Answered Questions

13 Answered Questions

9 Answered Questions

[SOLVED] Order Bars in ggplot2 bar graph

  • 2011-03-06 04:20:48
  • Julio Diaz
  • 178166 View
  • 206 Score
  • 9 Answer
  • Tags:   r ggplot2 r-faq

7 Answered Questions

[SOLVED] Simultaneously merge multiple data.frames in a list

8 Answered Questions

[SOLVED] Quickly reading very large tables as dataframes in R

2 Answered Questions

15 Answered Questions

[SOLVED] Split a column of a data frame to multiple columns

6 Answered Questions

11 Answered Questions

[SOLVED] Plot with 2 y axes, one y axis on the left, and another y axis on the right

  • 2010-06-23 05:52:19
  • lokheart
  • 157330 View
  • 151 Score
  • 11 Answer
  • Tags:   r ggplot2 r-faq

8 Answered Questions

[SOLVED] Mean per group in a data.frame

  • 2014-02-24 08:56:59
  • Ianthe
  • 218449 View
  • 103 Score
  • 8 Answer
  • Tags:   r aggregate

2 Answered Questions

[SOLVED] Reshape three column data frame to matrix ("long" to "wide" format)

10 Answered Questions

2 Answered Questions

[SOLVED] Why is `[` better than `subset`?

12 Answered Questions

[SOLVED] Drop factor levels in a subsetted data frame

3 Answered Questions

[SOLVED] Numbering rows within groups in a data frame

  • 2012-10-16 23:38:41
  • eli-k
  • 34043 View
  • 76 Score
  • 3 Answer
  • Tags:   r dataframe r-faq

10 Answered Questions

[SOLVED] Error: could not find function ... in R

7 Answered Questions

[SOLVED] Converting year and month ("yyyy-mm" format) to a date?