Sum of multiple columns
We can calculate the sum of multiple columns by using rowSums() and c() Function. we simply have to pass the name of the columns.
Syntax:
rowSums(dataframe[ , c(“column1”, “column2”, “column n”)])
where
- dataframe is the input dataframe
- c() represents the number of columns to be specified to add
Example: R program to add multiple columns
Python3
# create a dataframe with subjects marks data = data.frame(sub1=c(90, 89, 78, 89), sub2=c(100, 90, 86, 84), sub3=c(89, 90, 98, 99), sub4=c(86, 78, 87, 99)) # add column1, column2 and column 4 print(rowSums(data[, c("sub1", "sub2", "sub4")])) # add column1, column2 and column 3 print(rowSums(data[, c("sub1", "sub2", "sub3")])) # add column4, column2 and column 3 print(rowSums(data[, c("sub4", "sub2", "sub3")])) |
Output:
[1] 276 257 251 272 [1] 279 269 262 272 [1] 275 258 271 282
Sum of Two or Multiple DataFrame Columns in R
In this article, we will discuss how to perform some of two and multiple dataframes columns in R programming language.
Database in use: