13 Answered Questions

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

6 Answered Questions

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

7 Answered Questions

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

11 Answered Questions

[SOLVED] How to deal with SettingWithCopyWarning in Pandas?

14 Answered Questions

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

6 Answered Questions

19 Answered Questions

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

8 Answered Questions

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

  • 2013-08-14 02:27:57
  • Samuel Song
  • 79079 View
  • 87 Score
  • 8 Answer
  • Tags:   r dataframe r-faq

7 Answered Questions

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

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

14 Answered Questions

[SOLVED] Split data frame string column into multiple columns

12 Answered Questions

5 Answered Questions

[SOLVED] Numbering rows within groups in a data frame

  • 2012-10-16 23:38:41
  • eli-k
  • 59658 View
  • 112 Score
  • 5 Answer
  • Tags:   r dataframe r-faq

13 Answered Questions

[SOLVED] Drop factor levels in a subsetted data frame

5 Answered Questions

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

9 Answered Questions

[SOLVED] How to select the first row of each group?

15 Answered Questions

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

6 Answered Questions

[SOLVED] How to unnest (explode) a column in a pandas DataFrame?

5 Answered Questions

8 Answered Questions

[SOLVED] Pandas group-by and sum

6 Answered Questions

[SOLVED] How to pivot DataFrame?

3 Answered Questions

[SOLVED] Calculate the mean by group

  • 2012-07-19 14:08:23
  • Jojo Ono
  • 70791 View
  • 44 Score
  • 3 Answer
  • Tags:   r dataframe r-faq

11 Answered Questions

[SOLVED] Count number of rows within each group

  • 2012-03-21 16:50:33
  • MikeTP
  • 180136 View
  • 87 Score
  • 11 Answer
  • Tags:   r dataframe r-faq

15 Answered Questions

[SOLVED] Split (explode) pandas dataframe string entry to separate rows

4 Answered Questions

8 Answered Questions

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

  • 2009-11-06 09:58:58
  • lhahne
  • 239336 View
  • 128 Score
  • 8 Answer
  • Tags:   r subset dataframe

7 Answered Questions

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

9 Answered Questions

[SOLVED] Convert a list of data frames into one data frame

  • 2010-05-17 17:38:24
  • JD Long
  • 148989 View
  • 269 Score
  • 9 Answer
  • Tags:   list r dataframe