double[] cS = pca.sampleToEigenSpace(sample);
System.out.println("(" + cS[0] + " " + cS[1] + ")");
} */
double[] s1 = {x[0],y[0]};
double[] c1 = pca.sampleToEigenSpace(s1);
// Expecting (-0.8279702, 0.1751153)
double c1Len = c1[0]*c1[0] + c1[1]*c1[1];
assertTrue( c1Len - 0.7162 < 0.00001);