Package org.apache.pig.piggybank.evaluation.stats

Examples of org.apache.pig.piggybank.evaluation.stats.COV

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import junit.framework.TestCase;

public class TestStat extends TestCase{
 
  public void testCOV() throws Exception{
    EvalFunc<DataBag> COV = new COV("a","b");
    DataBag dBag = new DefaultDataBag();
    Tuple tup1 = new Tuple(1);
    tup1.setField(0, 1);
    dBag.add(tup1);
    tup1 = new Tuple(1);
    tup1.setField(0, 4);
    dBag.add(tup1);
    tup1 = new Tuple(1);
    tup1.setField(0, 8);
    dBag.add(tup1);
    tup1 = new Tuple(1);
    tup1.setField(0, 4);
    dBag.add(tup1);
    tup1 = new Tuple(1);
    tup1.setField(0, 7);
    dBag.add(tup1);
    tup1 = new Tuple(1);
    tup1.setField(0, 8);
    dBag.add(tup1);
    DataBag dBag1 = new DefaultDataBag();
    tup1 = new Tuple(1);
    tup1.setField(0, 2);
    dBag1.add(tup1);
    tup1 = new Tuple(1);
    tup1.setField(0, 2);
    dBag1.add(tup1);
    tup1 = new Tuple(1);
    tup1.setField(0, 3);
    dBag1.add(tup1);
    tup1 = new Tuple(1);
    tup1.setField(0, 3);
    dBag1.add(tup1);
    tup1 = new Tuple(1);
    tup1.setField(0, 2);
    dBag1.add(tup1);
    tup1 = new Tuple(1);
    tup1.setField(0, 4);
    dBag1.add(tup1);
    Tuple input = new Tuple(2);
    input.setField(0, dBag);
    input.setField(1, dBag1);
    DataBag output = new DefaultDataBag();
    COV.exec(input, output);
    Iterator<Tuple> it = output.iterator();
    Tuple ans = (Tuple) it.next();
    assertEquals(ans.getAtomField(0).toString(),"a");
    assertEquals(ans.getAtomField(1).toString(),"b");
    assertEquals(1.11111, ans.getAtomField(2).numval(),0.0005);
View Full Code Here
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import junit.framework.TestCase;

public class TestStat extends TestCase{
 
  public void testCOV() throws Exception{
    COV cov = new COV("a","b");
    DataBag dBag = DefaultBagFactory.getInstance().newDefaultBag();
    Tuple tup1 = DefaultTupleFactory.getInstance().newTuple(1);
    tup1.set(0, 1.0);
    dBag.add(tup1);
    tup1 = DefaultTupleFactory.getInstance().newTuple(1);
    tup1.set(0, 4.0);
    dBag.add(tup1);
    tup1 = DefaultTupleFactory.getInstance().newTuple(1);
    tup1.set(0, 8.0);
    dBag.add(tup1);
    tup1 = DefaultTupleFactory.getInstance().newTuple(1);
    tup1.set(0, 4.0);
    dBag.add(tup1);
    tup1 = DefaultTupleFactory.getInstance().newTuple(1);
    tup1.set(0, 7.0);
    dBag.add(tup1);
    tup1 = DefaultTupleFactory.getInstance().newTuple(1);
    tup1.set(0, 8.0);
    dBag.add(tup1);
    DataBag dBag1 = DefaultBagFactory.getInstance().newDefaultBag();
    tup1 = DefaultTupleFactory.getInstance().newTuple(1);
    tup1.set(0, 2.0);
    dBag1.add(tup1);
    tup1 = DefaultTupleFactory.getInstance().newTuple(1);
    tup1.set(0, 2.0);
    dBag1.add(tup1);
    tup1 = DefaultTupleFactory.getInstance().newTuple(1);
    tup1.set(0, 3.0);
    dBag1.add(tup1);
    tup1 = DefaultTupleFactory.getInstance().newTuple(1);
    tup1.set(0, 3.0);
    dBag1.add(tup1);
    tup1 = DefaultTupleFactory.getInstance().newTuple(1);
    tup1.set(0, 2.0);
    dBag1.add(tup1);
    tup1 = DefaultTupleFactory.getInstance().newTuple(1);
    tup1.set(0, 4.0);
    dBag1.add(tup1);
    Tuple input = DefaultTupleFactory.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);
View Full Code Here
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Related Classes of org.apache.pig.piggybank.evaluation.stats.COV

  • org.apache.pig.data.DataAtom
  • org.apache.pig.data.DataBag
  • org.apache.pig.data.Tuple
  • org.apache.pig.impl.logicalLayer.schema.AtomSchema
  • org.apache.pig.impl.logicalLayer.schema.Schema
  • org.apache.pig.piggybank.test.evaluation.TestStat
  • java.io.IOException
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