How to Divide Matrix Rows by a Vector in R (Example Code)

In this tutorial you’ll learn how to use the t() function to divide rows by a vector in the R programming language.

my_matrix <- matrix(11:30, ncol = 5)    # Example matrix in R
my_matrix                               # Display example matrix in RStudio console
#      [,1] [,2] [,3] [,4] [,5]
# [1,]   11   15   19   23   27
# [2,]   12   16   20   24   28
# [3,]   13   17   21   25   29
# [4,]   14   18   22   26   30
my_vector <- 5:1                        # Example vector in R
my_vector                               # Display example vector in RStudio console
# [1] 5 4 3 2 1

Example: Dividing Rows of Matrix by Vector Elements Using t() Function

t(t(my_matrix) / my_vector)             # Applying t() function
#      [,1] [,2]     [,3] [,4] [,5]
# [1,]  2.2 3.75 6.333333 11.5   27
# [2,]  2.4 4.00 6.666667 12.0   28
# [3,]  2.6 4.25 7.000000 12.5   29
# [4,]  2.8 4.50 7.333333 13.0   30

Related Articles

Please find some further R tutorials on topics such as extracting data, vectors, and matrices in the following list.

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