Examples with ValNum water.rapids.vals.ValNum used on opensource projects

Example 1 with ValNum

use of water.rapids.vals.ValNum in project h2o-3 by h2oai.

the class AstFlatten method apply.

@Override
public Val apply(Env env, Env.StackHelp stk, AstRoot[] asts) {
    Frame fr = stk.track(asts[1].exec(env)).getFrame();
    // did not flatten
    if (fr.numCols() != 1 || fr.numRows() != 1)
        return new ValFrame(fr);
    Vec vec = fr.anyVec();
    switch(vec.get_type()) {
        case Vec.T_BAD:
        case Vec.T_NUM:
            return new ValNum(vec.at(0));
        case Vec.T_TIME:
            // check for missing values
            return vec.isNA(0) ? new ValNum(Double.NaN) : new ValNum(vec.at8(0));
        case Vec.T_STR:
            return new ValStr(vec.atStr(new BufferedString(), 0).toString());
        case // check for missing values
        Vec.T_CAT:
            return vec.isNA(0) ? new ValStr("NA") : new ValStr(vec.factor(vec.at8(0)));
        default:
            throw H2O.unimpl("The type of vector: " + vec.get_type_str() + " is not supported by " + str());
    }
}

Example 2 with ValNum

use of water.rapids.vals.ValNum in project h2o-3 by h2oai.

the class AstRename method apply.

@Override
public ValNum apply(Env env, Env.StackHelp stk, AstRoot[] asts) {
    Key oldKey = Key.make(env.expand(asts[1].exec(env).getStr()));
    Key newKey = Key.make(env.expand(asts[2].exec(env).getStr()));
    Iced o = DKV.remove(oldKey).get();
    if (o instanceof Frame)
        DKV.put(newKey, new Frame(newKey, ((Frame) o)._names, ((Frame) o).vecs()));
    else if (o instanceof Model) {
        ((Model) o)._key = newKey;
        DKV.put(newKey, o);
    } else
        throw new IllegalArgumentException("Trying to rename Value of type " + o.getClass());
    return new ValNum(Double.NaN);
}

Example 3 with ValNum

use of water.rapids.vals.ValNum in project h2o-3 by h2oai.

the class AstProd method apply.

@Override
public ValNum apply(Env env, Env.StackHelp stk, AstRoot[] asts) {
    Frame fr = stk.track(asts[1].exec(env)).getFrame();
    for (Vec v : fr.vecs()) if (v.isCategorical() || v.isUUID() || v.isString())
        throw new IllegalArgumentException("`" + str() + "`" + " only defined on a data frame with all numeric variables");
    double prod = new AstProd.RedProd().doAll(fr)._d;
    return new ValNum(prod);
}

Example 4 with ValNum

use of water.rapids.vals.ValNum in project h2o-3 by h2oai.

the class AstReducerOp method apply.

@Override
public Val apply(Env env, Env.StackHelp stk, AstRoot[] asts) {
    // NOTE: no *initial* value needed for the reduction.  Instead, the
    // reduction op is used between pairs of actual values, and never against
    // the empty list.  NaN is returned if there are *no* values in the
    // reduction.
    double d = Double.NaN;
    for (int i = 1; i < asts.length; i++) {
        Val val = asts[i].exec(env);
        double d2 = val.isFrame() ? new AstReducerOp.RedOp().doAll(stk.track(val).getFrame())._d : val.getNum();
        if (i == 1)
            d = d2;
        else
            d = op(d, d2);
    }
    return new ValNum(d);
}

Example 5 with ValNum

use of water.rapids.vals.ValNum in project h2o-3 by h2oai.

the class AstRollupOp method apply.

@Override
public Val apply(Env env, Env.StackHelp stk, AstRoot[] asts) {
    Val arg1 = asts[1].exec(env);
    if (arg1.isRow()) {
        // Row-wise operation
        double[] ds = arg1.getRow();
        double d = ds[0];
        for (int i = 1; i < ds.length; i++) d = op(d, ds[i]);
        return new ValRow(new double[] { d }, null);
    }
    // Normal column-wise operation
    Frame fr = stk.track(arg1).getFrame();
    Vec[] vecs = fr.vecs();
    if (vecs.length == 0 || vecs[0].naCnt() > 0)
        return new ValNum(Double.NaN);
    double d = rup(vecs[0]);
    for (int i = 1; i < vecs.length; i++) {
        if (vecs[i].naCnt() > 0)
            return new ValNum(Double.NaN);
        d = op(d, rup(vecs[i]));
    }
    return new ValNum(d);
}