Converting R matrix into LaTeX matrix in the math or equation environment

Question

Let\'s say there is an R matrix x:

x <- structure(c(2, 3, 5, 7, 9, 12, 17, 10, 18, 13), .Dim = c(5L,2L), .Dimnames = list(NULL, c(\"X1\", \"X         


        

Answer 1

For a future reference, here is the function that I wrote myself later:

matrix2latex <- function(matr) {

printmrow <- function(x) {

    cat(cat(x,sep=" & "),"\\\\ \n")
}

cat("\\begin{bmatrix}","\n")
body <- apply(matr,1,printmrow)
cat("\\end{bmatrix}")
}

It doesn't require an external package. For some reason the apply produced NULL at the end of the output (the actual return?). This was solved by assigning the return to the body variable, which is otherwise of no use. The next task is to render the output of that function in LaTeX within knitr.