Why am I unable to receive the same results when executing the example code from the documentation for the WPVIEWCF function in the Wavelet Toolbox 2.2 (R13SP1)?

Why am I unable to receive the same results when executing the example code from the documentation for the WPVIEWCF function in the Wavelet Toolbox 2.2 (R13SP1)?

When I copy and paste the following example code from the documentation, I obtain different results:

% Create a wavelet packet tree.

x = sin(8*pi*[0:0.005:1]);

t = wpdec(x,4,'db1');

% Plot tree t.

% Click the node (3,0), (see the plot function)

plot(t);

% Plot the colored wavelet packet coefficients.

wpviewcf(t,1);

Answer 1

[MathWorks Support Team]

This bug has been fixed for Release 14 SP1 (R14SP1). For previous releases, please read below for any possible workarounds:

This has been verified as an error within the documentation for the Wavelet Toolbox within the WPVIEWCF section. The documentation should read as follows:

% Create a wavelet packet tree.

x = sin(8*pi*[0:0.005:1]);

t = wpdec(x,3,'db1');

% Plot tree t.

% Click the node (3,0), (see the plot function)

plot(t);

% Plot the colored wavelet packet coefficients.

wpviewcf(t,1);