I have been getting this error and have had no luck resolving it. Any help please?

>> addwaves3(a, 'db2') Error: File: addwaves3.m Line: 32 Column: 1 This statement is not inside any function. (It follows the END that terminates the definition of the function "addwaves3".)

this is the code for the function attached.

    function addwaves3(input, wavelet)

    % Get the Daubechies2 wavelet/scaling coeffs
    % if wavelet == 'db2'
    if (strcmp(wavelet,'db2'))
       [LPF, HPF, ILPF, IHPF] = myDB2;
    else
       [LPF, HPF, ILPF, IHPF] = myHaar;
    end

    % Do the wavelet transform
    L = downsample(myconv(input, LPF));
    H = downsample(myconv(input, HPF));
    %[LL, LH] = dwt(L);
    LL = downsample(myconv(L, LPF));
    LH = downsample(myconv(L, HPF));
    %[LLL, LLH] = dwt(LL);
    LLL = downsample(myconv(LL, LPF));
    LLH = downsample(myconv(LL, HPF));

    % L is not needed anymore, nor is LL
    clear L LL

    % Get the waves for each sub-signals contribution
    if (strcmp(wavelet,'db2'))
        % The ILow and IHigh functions are hard-coded for db2.
        wave1 = ILow(ILow(ILow(LLL)));
        wave2 = ILow(ILow(IHigh(LLH)));
        wave3 = ILow(IHigh(LH));
        wave4 = IHigh(H);
    else
        % The ILowHaar and IHighHaar functions are hard-coded for haar.
        wave1 = ILowHaar(ILowHaar(ILowHaar(LLL)));
        wave2 = ILowHaar(ILowHaar(IHighHaar(LLH)));
        wave3 = ILowHaar(IHighHaar(LH));
        wave4 = IHighHaar(H);
    end

    % The signal above needs to be padded (made longer).
    %  First, find the longest length.
    max_len = max(max(length(wave1), length(wave2)), ...
                  max(length(wave3), length(wave4)));
    % Now adjust the signals, as needed
    if (length(wave1) < max_len)
        wave1(length(wave1)+1:max_len) = 0;
    end
    if (length(wave2) < max_len)
        wave2(length(wave2)+1:max_len) = 0;
    end
    if (length(wave3) < max_len)
        wave3(length(wave3)+1:max_len) = 0;
    end
    if (length(wave4) < max_len)
        wave4(length(wave4)+1:max_len) = 0;
    end

    % Add all the waves together
    waves = wave1 + wave2 + wave3 + wave4;

    % Make the input the same length as the output
    % do this by truncating the output
    output = waves(1:length(input));

    disp(sprintf('The total error between input and output is %10.9f.', ...
        sum(abs(input - output))));

    % Now plot the results.
    figure(1);
    subplot(4,1,1);
    plot(wave4);
    %plot100to1(wave4);
    title('High wave (level 1 detail)');
    subplot(4,1,2);
    plot(wave3);
    %plot100to1(wave3);
    title('Low-High wave (level 2 detail)');
    subplot(4,1,3);
    plot(wave2);
    %plot100to1(wave2);
    title('Low-Low-High wave (level 3 detail)');
    subplot(4,1,4);
    plot(wave1);
    %plot100to1(wave1);
    title('Low-Low-Low wave (level 3 approximation)');

    figure(2);
    subplot(2,1,1);
    plot(input);
    %plot100to1(input);
    title('Input Signal');
    subplot(2,1,2);
    %plot(1:length(output), output, 'b', 1:length(input), input, 'r');
    plot(output);
    %plot100to1(output);
    title('Reconstructed signal (sum of previous fig)');

Thanks

Answer 1

[Iain]

(It follows the END that terminates the definition of the function "addwaves3".)

Thats your major clue:

 function ...
  %code here
 end
 addwaves3(a, 'db2')

The error is that you end the function before some more real code. You may either:

 Comment out the extra real code if you don't want it to do anything
 Remove an incorrect end
 Put the extra real code inside another function

 function ...
  %code here
 addwaves3(a, 'db2') 

 function ...
  %code here
 end
 % addwaves3(a, 'db2') 

 function ...
  %code here
 end
 function trashcan
  addwaves3(a, 'db2') 
 end

[Uchenna]

Thanks a lot.