cwtp(input, noctave, nvoice=1, w0=2 * pi, twoD=TRUE, plot=TRUE)T to organize the output as a 2D array
(signal size $\times$ nb scales), otherwise, the output is a 3D
array (signal size $\times$ noctave $\times$ nvoice).T, display the modulus of the continuous wavelet
transform on the graphic device.cgt, cwt, cwtTh,
DOG for wavelet transform, and gabor for
continuous Gabor transform.