Examples of weka.core.Instance.stringValue()

weka.core.Instance.stringValue()
Returns the value of a nominal, string, date, or relational attribute for the instance as a string. @param attIndex the attribute's index @return the value as a string @throws IllegalArgumentException if the attribute is not a nominal,string, date, or relation-valued attribute. @throws UnassignedDatasetException if the instance doesn't belongto a dataset.

      Instance instance = instEnum.nextElement();
      Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertEquals(WekaDataCollector.ONE,instance.stringValue(testClassifier.attributesOfAnInstance[1]));


      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[2]));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[3]));    
    }
    
    {// pairE - incorrect pair, compared only with D
      Instance instance = instEnum.nextElement();

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      Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertEquals(WekaDataCollector.ONE,instance.stringValue(testClassifier.attributesOfAnInstance[1]));


      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[2]));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[3]));    
    }
    
    {// pairE - incorrect pair, compared only with D
      Instance instance = instEnum.nextElement();
      Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));

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    }
    
    {// pairE - incorrect pair, compared only with D
      Instance instance = instEnum.nextElement();
      Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertEquals(WekaDataCollector.MINUSONE,instance.stringValue(testClassifier.attributesOfAnInstance[1]));


      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[2]));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[3]));// this should perhaps return ONE but we are effectively comparing floating-point values by equality so the outcome is not ceertain  
    }

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    {// pairE - incorrect pair, compared only with D
      Instance instance = instEnum.nextElement();
      Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertEquals(WekaDataCollector.MINUSONE,instance.stringValue(testClassifier.attributesOfAnInstance[1]));


      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[2]));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[3]));// this should perhaps return ONE but we are effectively comparing floating-point values by equality so the outcome is not ceertain  
    }

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      Instance instance = instEnum.nextElement();
      Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertEquals(WekaDataCollector.MINUSONE,instance.stringValue(testClassifier.attributesOfAnInstance[1]));


      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[2]));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[3]));// this should perhaps return ONE but we are effectively comparing floating-point values by equality so the outcome is not ceertain  
    }
    
    Assert.assertFalse(instEnum.hasMoreElements());
  }

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      Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertEquals(WekaDataCollector.MINUSONE,instance.stringValue(testClassifier.attributesOfAnInstance[1]));


      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[2]));
      Assert.assertEquals(WekaDataCollector.ZERO,instance.stringValue(testClassifier.attributesOfAnInstance[3]));// this should perhaps return ONE but we are effectively comparing floating-point values by equality so the outcome is not ceertain  
    }
    
    Assert.assertFalse(instEnum.hasMoreElements());
  }

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      Assert.assertFalse(instance.hasMissingValue());
      Assert.assertTrue(instance.classAttribute().isNominal());
      Assert.assertEquals(2,instance.classAttribute().numValues());// true/false
      Assert.assertEquals("true",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
  
      Assert.assertEquals(WekaDataCollector.MINUSONE,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertTrue(testClassifier.attributesOfAnInstance[0].isNominal());
      Assert.assertEquals("REL statechum score",testClassifier.attributesOfAnInstance[0].name());
  
      Assert.assertEquals(WekaDataCollector.ONE,instance.stringValue(testClassifier.attributesOfAnInstance[1]));
      Assert.assertTrue(testClassifier.attributesOfAnInstance[1].isNominal());

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      Assert.assertEquals(WekaDataCollector.MINUSONE,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertTrue(testClassifier.attributesOfAnInstance[0].isNominal());
      Assert.assertEquals("REL statechum score",testClassifier.attributesOfAnInstance[0].name());
  
      Assert.assertEquals(WekaDataCollector.ONE,instance.stringValue(testClassifier.attributesOfAnInstance[1]));
      Assert.assertTrue(testClassifier.attributesOfAnInstance[1].isNominal());
      Assert.assertEquals("REL statechum compatibility score",testClassifier.attributesOfAnInstance[1].name());
    }
    
    {// pairC - incorrect pair

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      Assert.assertFalse(instance.hasMissingValue());
      Assert.assertTrue(instance.classAttribute().isNominal());
      Assert.assertEquals(2,instance.classAttribute().numValues());// true/false
      Assert.assertEquals("false",instance.classAttribute().value((int) instance.value(instance.classAttribute())));
  
      Assert.assertEquals(WekaDataCollector.ONE,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertTrue(testClassifier.attributesOfAnInstance[0].isNominal());
      Assert.assertEquals("REL statechum score",testClassifier.attributesOfAnInstance[0].name());
  
      Assert.assertEquals(WekaDataCollector.MINUSONE,instance.stringValue(testClassifier.attributesOfAnInstance[1]));
      Assert.assertTrue(testClassifier.attributesOfAnInstance[1].isNominal());

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      Assert.assertEquals(WekaDataCollector.ONE,instance.stringValue(testClassifier.attributesOfAnInstance[0]));
      Assert.assertTrue(testClassifier.attributesOfAnInstance[0].isNominal());
      Assert.assertEquals("REL statechum score",testClassifier.attributesOfAnInstance[0].name());
  
      Assert.assertEquals(WekaDataCollector.MINUSONE,instance.stringValue(testClassifier.attributesOfAnInstance[1]));
      Assert.assertTrue(testClassifier.attributesOfAnInstance[1].isNominal());
      Assert.assertEquals("REL statechum compatibility score",testClassifier.attributesOfAnInstance[1].name());
    }
    
    Assert.assertFalse(instEnum.hasMoreElements());

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