package water.rapids.ast.prims.advmath;
import water.fvec.Frame;
import water.fvec.Vec;
import water.rapids.Env;
import water.rapids.vals.ValFrame;
import water.rapids.ast.AstPrimitive;
import water.rapids.ast.AstRoot;
public class AstModuloKFold extends AstPrimitive {
@Override
public String[] args() {
return new String[]{"ary", "nfolds"};
}
@Override
public int nargs() {
return 1 + 2;
} // (modulo_kfold_column x nfolds)
@Override
public String str() {
return "modulo_kfold_column";
}
@Override
public ValFrame apply(Env env, Env.StackHelp stk, AstRoot asts[]) {
Vec foldVec = stk.track(asts[1].exec(env)).getFrame().anyVec().makeZero();
int nfolds = (int) asts[2].exec(env).getNum();
return new ValFrame(new Frame(AstKFold.moduloKfoldColumn(foldVec, nfolds)));
}
}