Divide Each Row of Matrix & Data Frame by Vector Element in R (Example) | t & as.data.frame Function

R code of this video:

mat ＜- matrix(1:20, ncol = 4) # Create example matrix
mat # Print example matrix

vec ＜- c(5, 1, 8, 3) # Create example vector
vec # Print example vector

mat_div ＜- t(t(mat) / vec) # Divide rows of matrix by vector
mat_div # Print divided matrix

data # Print example data frame

data_div # Print divided data frame

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[WahranRai]

I will recommend you the following code (online with R )
mat_div = sapply(1:ncol(mat), function(x) mat[, x]/vec[x])
data = as.data.frame(mat)
data_div = as.data.frame(sapply(1:ncol(mat), function(x) data[, x]/vec[x]))

[haraldurkarlsson]

Very nice video but we can generate the same result for the data frame just by dividing into the data frame with the vector directly. Or simply: df/vec - no need to transpose twice (you forgot to mention what the t stands for) or do another as.data.frame().

[haraldurkarlsson]

Joachim,
You might look into the flextable package. It prints out some nice looking table (it works with the tidyverse). For instance the function qflextable(df) will make a quick table.