Insert or change a column position in dataframe in R
45771
Add (insert) a column between two columns in a data.frame
82140
How do I delete rows in a data frame?
89697
Replace a column in table with a list of numbers?
135319
Convert the values in a column into row names in an existing data frame
81713
How to add an extra column to a current matrix (list)?
85514
Random place change in row with restrictions
119476
How to insert a character in a string at a certain position?
137286
stacking columns in data.frame into one column in R
97500
Modifying a column in a table
148780
How do I get the coordinates of my data frame always in long/lat?
111594
Insert figure in one column
52175
Adding new column to existing DataFrame in Python pandas
40942
Conditional merge/replacement in R
51331
PHP SimpleXML: insert node at certain position
158497
reshape dataframe based on a string split in one column in R
37373
Reshape three column data frame to matrix ("long" to "wide" format)
76624
How to convert from row to column?