In the R's interface, I suggest to wrap up the as.array operation in mx.nd.array, so users can simply write

mat = mx.nd.array(1:10, mx.cpu(0))
mat = mx.nd.array(matrix(1:4,2,2), mx.cpu(0))

instead of

x = as.array(c(1,2,3))
mat = mx.nd.array(x, mx.cpu(0))

in the current demo like https://github.com/dmlc/mxnet/blob/master/R-package/demo/basic_ndarray.R.