Absolute function in R – abs()

Absolute function in R – abs(), computes the absolute value of numeric data. abs() function in R is used to get the absolute value of Column in a dataframe, Absolute value of the matrix and vectors. Let’s see an example for each on how absolute method is used.

Syntax for absolute function in R:

 #abs function in R - abs
 
abs(-12.5) 
 
abs(12.5)


 

output:

absolute of vectors in R:

# absolute function in R- abs,for vector

x = c(-2.2,3.4,0,3.45,8,-4.5) 
abs(x)

output:

absolute of matrix in R:

# absolute function for matrix in R

x = matrix(c(-2,3,-5,3,-6,4),nrow=3,ncol=2,byrow=TRUE)
abs(x)

all the negative values of a matrix are turned to positive in above abs function

output:

Absolute value of column in R data frame :

lets use the below data frame in R to demonstrate absolute method for data frame.

# absolute function for a data frame in R

df$Absolute_Score = abs(df$Score)
df

in the above example, absolute function is applied to a column named “Score” in df data frame.

so the output will be