how to merge characters of a certain group into a new column in r
61315
Concatenating a column by a group in R
73700
How do I transpose data in columns to rows?
139710
How do I combine standard deviations of two groups?
135670
Combine lists while overriding values with same name in R
147397
How do I combine two data-frames based on two columns?
146677
Create several new derived variables from existing variables in data.frame
158428
Duplicating a column vector into a longer column vector
40942
Conditional merge/replacement in R
84325
Dynamically select data frame columns using $ and a character value
121072
concatenate lines based on first char of next line
35802
Dynamic "string" in R
48696
Combine (rbind) data frames and create column with name of original data frames
21821
Reshaping multiple sets of measurement columns (wide format) into single columns (long format)
20414
join comma delimited data column
12103
How to copy values from one column to another
86633
Merge records depending on common columns and specify the values which are uncommon in the last column as comma separated
13536
Function to convert column number to letter?