Examples of org.apache.pig.builtin.COV.exec()

org.apache.pig.builtin.COV.exec()
Function to compute covariance between data sets. @param input input tuple which contains data sets. @return output output dataBag which contain covariance between each pair of data sets.

        tup1.set(0, 4.0);
        dBag1.add(tup1);
        Tuple input = TupleFactory.getInstance().newTuple(2);
        input.set(0, dBag);
        input.set(1, dBag1);
        DataBag output = cov.exec(input);
        Iterator<Tuple> it = output.iterator();
        Tuple ans = (Tuple)it.next();
        assertEquals((String)ans.get(0),"a");
        assertEquals((String)ans.get(1),"b");
        assertEquals(1.11111, (Double)ans.get(2),0.0005);

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        tup1.set(0, 4.0);
        dBag1.add(tup1);
        Tuple input = TupleFactory.getInstance().newTuple(2);
        input.set(0, dBag);
        input.set(1, dBag1);
        DataBag output = cov.exec(input);
        Iterator<Tuple> it = output.iterator();
        Tuple ans = (Tuple)it.next();
        assertEquals((String)ans.get(0),"a");
        assertEquals((String)ans.get(1),"b");
        assertEquals(1.11111, (Double)ans.get(2),0.0005);

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        tup1.set(0, 4.0);
        dBag1.add(tup1);
        Tuple input = TupleFactory.getInstance().newTuple(2);
        input.set(0, dBag);
        input.set(1, dBag1);
        DataBag output = cov.exec(input);
        Iterator<Tuple> it = output.iterator();
        Tuple ans = (Tuple)it.next();
        assertEquals((String)ans.get(0),"a");
        assertEquals((String)ans.get(1),"b");
        assertEquals(1.11111, (Double)ans.get(2),0.0005);

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        tup1.set(0, 4.0);
        dBag1.add(tup1);
        Tuple input = TupleFactory.getInstance().newTuple(2);
        input.set(0, dBag);
        input.set(1, dBag1);
        DataBag output = cov.exec(input);
        Iterator<Tuple> it = output.iterator();
        Tuple ans = it.next();
        assertEquals(ans.get(0),"a");
        assertEquals(ans.get(1),"b");
        assertEquals(1.11111, (Double)ans.get(2),0.0005);

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        tup1.set(0, 4.0);
        dBag1.add(tup1);
        Tuple input = TupleFactory.getInstance().newTuple(2);
        input.set(0, dBag);
        input.set(1, dBag1);
        DataBag output = cov.exec(input);
        Iterator<Tuple> it = output.iterator();
        Tuple ans = it.next();
        assertEquals(ans.get(0),"a");
        assertEquals(ans.get(1),"b");
        assertEquals(1.11111, (Double)ans.get(2),0.0005);

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        tup1.set(0, 4.0);
        dBag1.add(tup1);
        Tuple input = TupleFactory.getInstance().newTuple(2);
        input.set(0, dBag);
        input.set(1, dBag1);
        DataBag output = cov.exec(input);
        Iterator<Tuple> it = output.iterator();
        Tuple ans = it.next();
        assertEquals(ans.get(0),"a");
        assertEquals(ans.get(1),"b");
        assertEquals(1.11111, (Double)ans.get(2),0.0005);

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        tup1.set(0, 4.0);
        dBag1.add(tup1);
        Tuple input = TupleFactory.getInstance().newTuple(2);
        input.set(0, dBag);
        input.set(1, dBag1);
        DataBag output = cov.exec(input);
        Iterator<Tuple> it = output.iterator();
        Tuple ans = it.next();
        assertEquals(ans.get(0),"a");
        assertEquals(ans.get(1),"b");
        assertEquals(1.11111, (Double)ans.get(2),0.0005);

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        tup1.set(0, 4.0);
        dBag1.add(tup1);
        Tuple input = TupleFactory.getInstance().newTuple(2);
        input.set(0, dBag);
        input.set(1, dBag1);
        DataBag output = cov.exec(input);
        Iterator<Tuple> it = output.iterator();
        Tuple ans = it.next();
        assertEquals(ans.get(0),"a");
        assertEquals(ans.get(1),"b");
        assertEquals(1.11111, (Double)ans.get(2),0.0005);

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        tup1.set(0, 4.0);
        dBag1.add(tup1);
        Tuple input = TupleFactory.getInstance().newTuple(2);
        input.set(0, dBag);
        input.set(1, dBag1);
        DataBag output = cov.exec(input);
        Iterator<Tuple> it = output.iterator();
        Tuple ans = it.next();
        assertEquals(ans.get(0),"a");
        assertEquals(ans.get(1),"b");
        assertEquals(1.11111, (Double)ans.get(2),0.0005);

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