Sum of two columns
The columns whose sum has to be calculated can be called through the $ operator and then we can perform the sum of two dataframe columns by using “+” operator.
Syntax:
dataframe$column1 + dataframe$column2
where
- dataframe is the input dataframe
- column1 is one column in the dataframe
- column2 is another column in the dataframe
Example: R program to add two columns in dataframe
R
# 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 and column2 print(data$sub1 + data$sub2) # add column1 and column3 print(data$sub1 + data$sub3) # add column1 and column4 print(data$sub1 + data$sub4) # add column2 and column4 print(data$sub2 + data$sub4) |
Output:
[1] 190 179 164 173 [1] 179 179 176 188 [1] 176 167 165 188 [1] 186 168 173 183
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: