I suppose this is trivial, but I can't find how to declare a vector of zeros in R.
For example, in Matlab, I would write:
X = zeros(1,3); 4 Answers
You have several options
integer(3) numeric(3) rep(0, 3) rep(0L, 3) You can also use the matrix command, to create a matrix with n lines and m columns, filled with zeros.
matrix(0, n, m) replicate is another option:
replicate(10, 0) # [1] 0 0 0 0 0 0 0 0 0 0 replicate(5, 1) # [1] 1 1 1 1 1 To create a matrix:
replicate( 5, numeric(3) ) # [,1] [,2] [,3] [,4] [,5] #[1,] 0 0 0 0 0 #[2,] 0 0 0 0 0 #[3,] 0 0 0 0 0 X <- c(1:3)*0 Maybe this is not the most efficient way to initialize a vector to zero, but this requires to remember only the c() function, which is very frequently cited in tutorials as a usual way to declare a vector.
As as side-note: To someone learning her way into R from other languages, the multitude of functions to do same thing in R may be mindblowing, just as demonstrated by the previous answers here.
