Can anyone tell me about issues I have to look out for when dealing with Rcpp
Functions and passing Armadillo objects as arguments? I'm getting "not
compatible with INTSXP" and segfault errors when calling the following Rcpp
equivalent of R's 'predict(loess(y~x, weights=w, span=span))'. The errors
usually only manifest only after several dozen calls.
Davor
const vec predict(const vec& x, const vec& y,
const vec& weights, const double span) {
Function formula_fn("formula");
Function loess_fn("loess");
Function predict_fn("predict");
List data = List::create(_["x"] = wrap(x),
_["y"] = wrap(y));
NumericVector weights_r = wrap(weights);
const NumericVector out_r = predict_fn(loess_fn(formula_fn("y~x"),
data,
weights_r,
Named("span") = span));
const vec out = vec(out_r.begin(), out_r.size());
return out;
}
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