Results of the correlation of the features w (1) and w (2) with w (3). The graph shows changes in the features w(1) and w(2) with w(3) measured with the proposed algorithm. The graph also shows 4 characteristic clusters (classes) marked in red, green, blue and magenta. The characteristic waveforms L
(n,i) corresponding to the classes 1,2,3,4 are shown in the corners.