Dot and Brace indexing is not supported for variables of this type in the Lifting wavelet transform artifact removal method .How can I solve this problem ?

% Plot the approximation coefficients at each level
for i = 1:level
    subplot(level+1, 1, i+1);
    plot(ca{i});
    title(['Approximation Coefficients at Level ' num2str(i)]);
end

% Plot the detail coefficients at each level
for i = 1:level
    figure;
    subplot(level, 1, i);
    plot(cd{i});
    title(['Detail Coefficients at Level ' num2str(i)]);
end

[Walter Roberson]

Time to use the debugger to examine what class(ca) and class(cd) are.

[Komal]

ca and cd are cell arrays and its class type double.

[Walter Roberson]

dbstop if error

Run until the code stops. When it does, show us which line the problem is occuring on, and show us class() of every variable mentioned on that line.

[Komal]

Brace indexing is not supported for variables of this type.

Error in lwt_artifactremoval (line 71)

plot(ca{i});

71 plot(ca{i});

[Walter Roberson]

Okay, and when that code stopped, what showed up when you did

whos ca

[Komal]

Dear expert,

Can you help me in the eeg signal featutre extraction by using CSP method? I am extracting feature but don't understand about the features. Please response my request then I sent you my code with all dditional files.

Thank you.

[Walter Roberson]

Sorry, I do not know anything about CSP method.

[Komal]

Ok.Thanks for your response.