如何使用R中的for循环填充列表？

Question

My goal is to create a list of numerical values starting at a lower bound a to an upper bound b with n equal increments. I have to that for very large values. I thought that using a for loop would easily do the work, but it is not working and I can't see where my mistake is.

I use the following code and it returns NA

a <- 20
b <- 2
n <- 18
inc < (a-b)/n

l <-c(b)

for ( i in n) {
l[i+1] <- l[i] + inc
}

I expected the following result

[2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ,19 , 20]

Instead, I get the following : [2 , NA , NA , ... ]

Answer 1

Okay I figured it out. I had to initiate the list with the right space by adding this piece of code before. l <- numeric(n) and then I adde the first element to initialize it. l[1] <- b

Sorry, rookie mistake !