Recent questions tagged r

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1 answer

Concatenate 2 strings in R

Apr 14, 2018 in Data Analytics by BHARANI
 • 420 points • 1,101 views
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1 answer

Any built-in function to find mode

Apr 14, 2018 in Data Analytics by nirvana
 • 3,130 points • 371 views
+1 vote
1 answer

How to convert a list of dataframes in to a single dataframe using R?

Apr 13, 2018 in Data Analytics by BHARANI
 • 420 points • 6,348 views
+1 vote
1 answer

How to convert dataframe columns from factors to characters?

Apr 13, 2018 in Data Analytics by Sahiti
 • 6,370 points • 19,244 views
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1 answer

Rename a single column in dataframe using R

Apr 13, 2018 in Data Analytics by BHARANI
 • 420 points • 1,848 views
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1 answer

How to create an empty dataframe?

Apr 13, 2018 in Data Analytics by DataKing99
 • 8,240 points • 1,176 views
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1 answer

How to create dummy variables based on a categorical variable of lists in R?

Apr 13, 2018 in Data Analytics by Sahiti
 • 6,370 points • 2,327 views
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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
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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 • 77,387 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
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1 answer

Working of ggplot scale_continuous 'expand' argument

Apr 13, 2018 in Data Analytics by kappa3010
 • 2,090 points • 2,912 views
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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 • 2,681 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
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1 answer

How to convert a list to data frame in R?

Apr 12, 2018 in Data Analytics by DataKing99
 • 8,240 points • 21,848 views
0 votes
1 answer

How to merge data frames using joins?

Apr 12, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 654 views
+1 vote
2 answers

How to count the number of elements with the values in a vector?

Apr 12, 2018 in Data Analytics by kappa3010
 • 2,090 points • 4,593 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
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2 answers

How to use group by for multiple columns in dplyr, using string vector input in R?

Apr 12, 2018 in Data Analytics by nirvana
 • 3,130 points • 13,686 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 • 8,378 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
0 votes
1 answer

How to create excellent examples in R?

Apr 10, 2018 in Data Analytics by DataKing99
 • 8,240 points • 508 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
2 answers

How to count unique values in R?

Apr 9, 2018 in Data Analytics by DataKing99
 • 8,240 points • 6,289 views
0 votes
1 answer

R - Error: Duplicate identifiers for rows

Apr 9, 2018 in Data Analytics by nirvana
 • 3,130 points • 2,729 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 • 1,026 views
0 votes
1 answer

In a dpylr pipline how to use sample and seq?

Apr 6, 2018 in Data Analytics by DataKing99
 • 8,240 points • 913 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 • 6,403 views
0 votes
1 answer

How to use dplyr functions such as filter() inside nested data frames with map()

Apr 6, 2018 in Data Analytics by nirvana
 • 3,130 points • 4,288 views
0 votes
1 answer

Join list of data.frames using map() call

Apr 6, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 799 views
0 votes
1 answer

How to join two tables (tibbles) by *list* columns in R

Apr 6, 2018 in Data Analytics by DataKing99
 • 8,240 points • 1,420 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

By using dpylr package sum of multiple columns

Apr 5, 2018 in Data Analytics by CodingByHeart77
 • 3,740 points • 2,022 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
1 answer

How can I use parallel so that it preserves the list of data frames

Apr 4, 2018 in Data Analytics by DataKing99
 • 8,240 points • 789 views
0 votes
1 answer

Removing unimportant variables before building Random Forest

Apr 4, 2018 in Data Analytics by BHARANI
 • 420 points • 1,931 views
0 votes
1 answer

AUC for 3-Class prediction in R

Apr 4, 2018 in Data Analytics by BHARANI
 • 420 points • 1,172 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 • 795 views
0 votes
1 answer

Calculating accuracy of prediction of rpart model

Apr 4, 2018 in Data Analytics by nirvana
 • 3,130 points • 7,884 views
0 votes
1 answer

Selecting a sublist with purrr

Apr 4, 2018 in Data Analytics by nirvana
 • 3,130 points • 1,055 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
0 votes
3 answers

R vs MATLAB, which is better with respect to machine learning?

Apr 4, 2018 in Data Analytics by nirvana
 • 3,130 points • 1,130 views
0 votes
2 answers

Integration of R with Java

Apr 3, 2018 in Data Analytics by nirvana
 • 3,130 points • 805 views
0 votes
1 answer

How to change mulitiple characters in a column to a date

Apr 3, 2018 in Data Analytics by DataKing99
 • 8,240 points • 519 views
0 votes
1 answer

How to use a function to repeat a set of procedures on specific set of columns in a data frame?

Apr 3, 2018 in Data Analytics by DataKing99
 • 8,240 points • 1,302 views
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