void TestHistogram::testCumulative_Normalized()
{
Histogram hist(9);
hist[0] = 1; hist[1] = 2; hist[2] = 3; hist[3] = 4;
hist[4] = 5;
hist[5] = 4; hist[6] = 3; hist[7] = 2; hist[8] = 1;
CPPUNIT_ASSERT_EQUAL( 9, static_cast<int>(hist.size()));
CPPUNIT_ASSERT_EQUAL(25, static_cast<int>(hist.sum()));
// cumulative
{
IntVector cum = *hist.cumulative();
CPPUNIT_ASSERT_EQUAL( 9, static_cast<int>(cum.size()));
CPPUNIT_ASSERT_EQUAL(125, static_cast<int>(cum.Sum()));
CPPUNIT_ASSERT_EQUAL( 1, static_cast<int>(cum[0]));
CPPUNIT_ASSERT_EQUAL( 3, static_cast<int>(cum[1]));
CPPUNIT_ASSERT_EQUAL( 6, static_cast<int>(cum[2]));
CPPUNIT_ASSERT_EQUAL(10, static_cast<int>(cum[3]));
CPPUNIT_ASSERT_EQUAL(15, static_cast<int>(cum[4]));
CPPUNIT_ASSERT_EQUAL(19, static_cast<int>(cum[5]));
CPPUNIT_ASSERT_EQUAL(22, static_cast<int>(cum[6]));
CPPUNIT_ASSERT_EQUAL(24, static_cast<int>(cum[7]));
CPPUNIT_ASSERT_EQUAL(25, static_cast<int>(cum[8]));
}
// normalized
{
FloatVector norm = *hist.normalized();
CPPUNIT_ASSERT_EQUAL( 9, static_cast<int>(norm.size()));
CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.0, static_cast<double>(norm.Sum()), 0.00001);
CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.0/25.0, static_cast<double>(norm[0]), 0.00001);
CPPUNIT_ASSERT_DOUBLES_EQUAL( 2.0/25.0, static_cast<double>(norm[1]), 0.00001);
CPPUNIT_ASSERT_DOUBLES_EQUAL( 3.0/25.0, static_cast<double>(norm[2]), 0.00001);
CPPUNIT_ASSERT_DOUBLES_EQUAL( 4.0/25.0, static_cast<double>(norm[3]), 0.00001);
CPPUNIT_ASSERT_DOUBLES_EQUAL( 5.0/25.0, static_cast<double>(norm[4]), 0.00001);
CPPUNIT_ASSERT_DOUBLES_EQUAL( 4.0/25.0, static_cast<double>(norm[5]), 0.00001);
CPPUNIT_ASSERT_DOUBLES_EQUAL( 3.0/25.0, static_cast<double>(norm[6]), 0.00001);
CPPUNIT_ASSERT_DOUBLES_EQUAL( 2.0/25.0, static_cast<double>(norm[7]), 0.00001);
CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.0/25.0, static_cast<double>(norm[8]), 0.00001);
}
}
