Recent questions tagged dataframe

0 votes
2 answers

How to remove rows with missing values (NAs) in a data frame?

Apr 13, 2018 in Data Analytics by kappa3010
 • 2,090 points • 14,441 views
0 votes
1 answer

Sample random rows in DataFrame in R

Apr 13, 2018 in Data Analytics by Dynamic_Coder22
 • 180 points • 7,856 views
+4 votes
3 answers

How to sum a variable by group in R?

Apr 13, 2018 in Data Analytics by Dynamic_Coder22
 • 180 points • 77,381 views
0 votes
1 answer

.SD in data.table in R

Apr 13, 2018 in Data Analytics by kappa3010
 • 2,090 points • 6,670 views
0 votes
1 answer

What is the difference between [] and [[]] notations to access the elements of a list or dataframe in R?

Apr 12, 2018 in Data Analytics by nirvana
 • 3,130 points • 2,680 views
0 votes
1 answer

How to find out the sum/mean for multiple variables per group in R?

Apr 12, 2018 in Data Analytics by BHARANI
 • 420 points • 3,398 views
0 votes
1 answer

How to convert a list to data frame in R?

Apr 12, 2018 in Data Analytics by DataKing99
 • 8,240 points • 21,846 views
0 votes
1 answer

How to merge data frames using joins?

Apr 12, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 653 views
0 votes
1 answer

How to group all columns exculding a single column?

Apr 12, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 3,221 views
0 votes
1 answer

How to join a list of data frames using map()

Apr 11, 2018 in Data Analytics by DataKing99
 • 8,240 points • 1,267 views
0 votes
1 answer

How to apply list to a function which give data frame as output

Apr 11, 2018 in Data Analytics by nirvana
 • 3,130 points • 469 views
0 votes
1 answer

How to extract specific columns from a DataFrame ?

Apr 11, 2018 in Data Analytics by DataKing99
 • 8,240 points • 8,377 views
+1 vote
3 answers

How to change column names of a Data frame?

Apr 11, 2018 in Data Analytics by DataKing99
 • 8,240 points • 1,379 views
0 votes
1 answer

How to drop data frame columns by name?

Apr 10, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 640 views
0 votes
1 answer

How to replace NA values in a dataframe with Zero's ?

Apr 10, 2018 in Data Analytics by DataKing99
 • 8,240 points • 1,843 views
+1 vote
2 answers

How to sort a data frame by columns in R?

Apr 10, 2018 in Data Analytics by nirvana
 • 3,130 points • 1,452 views
0 votes
1 answer

How to spilt a column of a data frame into multiple columns

Apr 9, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 1,480 views
0 votes
1 answer

How to create a list of Data frames?

Apr 9, 2018 in Data Analytics by DataKing99
 • 8,240 points • 1,024 views
0 votes
1 answer

How to apply loops to multiply across various columns in a dataframe?

Apr 6, 2018 in Data Analytics by BHARANI
 • 420 points • 6,401 views
0 votes
1 answer

How to convert a text mining termDocumentMatrix into excel or csv in R?

Apr 5, 2018 in Data Analytics by DataKing99
 • 8,240 points • 1,631 views
0 votes
1 answer

How to achieve pivot like data using tidyverse library in R?

Apr 4, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 876 views
0 votes
2 answers

In data frame how to spilt strings into values?

Apr 4, 2018 in Data Analytics by DataKing99
 • 8,240 points • 794 views
+1 vote
1 answer

How to convert a list of vectors with various length into a Data.Frame?

Apr 4, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 1,282 views
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