Sum all values in every column of a data.frame in R
132276
How to sum data.frame column values?
55747
Grouping functions (tapply, by, aggregate) and the *apply family
136130
How to sum all the values in a dictionary?
5916
How to round all values in a matrix?
54588
Replacing all values in a table > $T$
40535
Sum over n variables
17863
How to sum over a List
20546
sum each value in a list of tuples
76481
Sum count column in raster attribute?
25125
Sum over multiple indices
129336
sum all values for table column based on class
142751
How do you remove columns from a data.frame?
10841
Calculate total sum of all numbers in c:forEach loop
99563
How to convert a data frame column to numeric type?
146677
Create several new derived variables from existing variables in data.frame
5136
How to sum a variable by group
45455
sum pair of columns based on matching fields