| Group: | Mathematical Functions |
| Subgroup: | Fourier and Wavelet transforms |
| See also: | fwtin invfwtin dwt invdwt fwt invfwt |
| Function: | fwtinshift | |
| Description: | fwtinshift retrieves the wavelet coefficients for a given shift of the Fast Wavelet Transformation of all circular shifts (fwtin) of a vector. |
| Usage: | x = fwtinshift (ti, param) | |
| Input: | ||
| ti | n x d matrix, all circular shifts (fwtin) | |
| param | 2 x 1 vector, param[1] = log2(# of father wavelet coeffs), param[2] = shift | |
| Output: | ||
| x | n x 1 vector, resulting coefficients | |
library ("wavelet")
x = (0:15)/16
y = sin(pi*x)+normal(16)
ti = fwtin (y, 2, daubechies4)
fwtinshift (ti, cols(ti)|0)
reproduces x since no shifts were done.
| Group: | Mathematical Functions |
| Subgroup: | Fourier and Wavelet transforms |
| See also: | fwtin invfwtin dwt invdwt fwt invfwt |