Why am I getting an error 'Execution of script cosamp as a function is not supported'
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%% Generate signal, DCT of signal
n = 4096; % points in high resolution signal
t = linspace(0, 1, n);
x = cos(2* 97 * pi * t) + cos(2* 777 * pi * t);
xt = fft(x); % Fourier transformed signal
PSD = xt.*conj(xt)/n; % Power spectral density
% Randomly sample signal
p = 128; % num. random samples, p=n/32
perm = round(rand(p, 1) * n);
y = x(perm); % compressed measurement
% Solve compressed sensing problem
Psi = dct(eye(n, n)); % build Psi
Theta = Psi(perm, :); % Measure rows of Psi
s = cosamp(Theta,y,10,1.e-10,10); % CS via matching pursuit
xrecon = idct(s); % reconstruct full signal
Elghandouri Mohammed on 25 Jan 2022
Please, have you solved this problem or not? I have the same problem, I don’t know how I can solve it.
Chris on 25 Jan 2022
Edited: Chris on 25 Jan 2022
Using the function provided by @Elghandouri Mohammed and the original script, the error I get is:
Error using _*_
Incorrect dimensions for matrix multiplication. ...
That can be remedied by transposing y, so that its dimensions correlate with Theta's dimensions:
s = cosamp(Theta,y',10,1.e-10,10);
If you are still getting 'Execution of script cosamp as a function is not supported'
Then there is a script called cosamp.m somewhere in your Matlab path, which Matlab is attempting to run.
type which cosamp in the Matlab Command Window to locate it, and rename it or remove it from Matlab's path.