r - `cv.glmnet` works in RStudio but not RScript

Question

The following commands work fine in RStudio, but not RScript:

require(glmnet)
calibdata = read.csv("calibrationfile.csv")

xs = model.matrix(as.formula("targetvar~predictor1+predictor2)),calibdata)[,-1] # -1 discards intercept constant, glmnet has its own
ys = as.numeric(unlist(calibdata["targetvar"]))
fit=cv.glmnet(xs,ys)

The error message from RScript:

Error in is(x, "CsparseMatrix") : could not find function "new"
Calls: cv.glmnet -> glmnet -> elnet -> getcoef -> drop0 -> is
Execution halted

R version is 3.2.3 in both cases and glmnet version 2.0-2.

How can I get glmnet to work in RScript?

Answer 1

RScript has this "lovely" feature of not loading the (base package) methods for you.

So all you need here is an additional

  require(methods)

or

  suppressMessages(library(methods))

For what it is worth, the littler command-line and scripting front-end to R that Jeff Horner and I wrote defaults to loading methods for you...