Indexing in plot x-axis label in for loop

Question

I am making plots with a for loop in the form of

for(i in 1:10){
plot(matrix.X, ylab=expression(beta[i]))
}

This code only labels each of the 10 plots with Beta_i, however I would like the ylabs to be Beta_1,...,Beta_10. How shall I label the plots? Thanks in advance!

Answer 1

for(i in 1:10){
  plot(matrix.X, ylab=paste0("beta_", i)) # you need the paste function
}