12 Answered Questions

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

6 Answered Questions

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

5 Answered Questions

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

15 Answered Questions

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

5 Answered Questions

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

  • 2013-08-14 02:27:57
  • Samuel Song
  • 49386 View
  • 60 Score
  • 5 Answer
  • Tags:   r dataframe r-faq

7 Answered Questions

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

4 Answered Questions

8 Answered Questions

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

15 Answered Questions

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

7 Answered Questions

[SOLVED] How to deal with SettingWithCopyWarning in Pandas?

2 Answered Questions

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

12 Answered Questions

[SOLVED] Drop factor levels in a subsetted data frame

9 Answered Questions

3 Answered Questions

[SOLVED] Numbering rows within groups in a data frame

  • 2012-10-16 23:38:41
  • eli-k
  • 30143 View
  • 71 Score
  • 3 Answer
  • Tags:   r dataframe r-faq

14 Answered Questions

[SOLVED] Remove rows with NAs (missing values) in data.frame

11 Answered Questions

[SOLVED] Select rows from a DataFrame based on values in a column in pandas

3 Answered Questions

[SOLVED] Calculate mean per group (mean by group)

  • 2012-07-19 14:08:23
  • Jojo Ono
  • 36749 View
  • 32 Score
  • 3 Answer
  • Tags:   r dataframe r-faq

7 Answered Questions

[SOLVED] Filter dataframe rows if value in column is in a set list of values

10 Answered Questions

[SOLVED] Count number of rows within each group

  • 2012-03-21 16:50:33
  • MikeTP
  • 115908 View
  • 65 Score
  • 10 Answer
  • Tags:   r dataframe r-faq

5 Answered Questions

[SOLVED] Filter data.frame rows by a logical condition

  • 2009-11-06 09:58:58
  • lhahne
  • 161295 View
  • 94 Score
  • 5 Answer
  • Tags:   r subset dataframe

16 Answered Questions

[SOLVED] Drop data frame columns by name

  • 2011-01-05 14:34:29
  • Btibert3
  • 888089 View
  • 607 Score
  • 16 Answer
  • Tags:   r dataframe r-faq

4 Answered Questions

[SOLVED] How to implement 'in' and 'not in' for Pandas dataframe

14 Answered Questions

[SOLVED] How do I replace NA values with zeros in an R dataframe?

  • 2011-11-17 03:45:44
  • Renato Dinhani
  • 623005 View
  • 459 Score
  • 14 Answer
  • Tags:   r dataframe na

5 Answered Questions

3 Answered Questions

[SOLVED] Pass a data.frame column name to a function

  • 2010-04-14 23:04:18
  • kmm
  • 60429 View
  • 69 Score
  • 3 Answer
  • Tags:   r dataframe r-faq

15 Answered Questions

[SOLVED] R list to data frame

  • 2010-11-19 16:40:52
  • Btibert3
  • 397700 View
  • 352 Score
  • 15 Answer
  • Tags:   r list dataframe

6 Answered Questions

[SOLVED] Split column at delimiter in data frame

  • 2011-08-15 18:37:19
  • Jeff Erickson
  • 129263 View
  • 67 Score
  • 6 Answer
  • Tags:   r dataframe

4 Answered Questions

13 Answered Questions

[SOLVED] Combine two data frames by rows (rbind) when they have different sets of columns

  • 2010-08-04 03:25:45
  • Btibert3
  • 136592 View
  • 134 Score
  • 13 Answer
  • Tags:   r dataframe r-faq

21 Answered Questions

[SOLVED] Renaming columns in pandas