Not enough input arguments. length()

Hey,

I wrote a function that should execute a DFT. I know there is FFT, but it's a college job.I don't understand why length doesn't work for the best of me.mainly because it worked without any problems in previous functions.

Could someone tell me what I'm doing wrong?

I googled and only found solutions to problems caused by misspellings.

Here is my code:

function[S] = DFT(s)
    N = length(s); %<- thats what the error caused
    X = 1:N;
    
    for m = 1 : N
        for k = 1 : N
            X(m) = X(m) + s(k) * exp(-(1i*pi*2*k*m*(1/N)));
            S(m) = X(m);
        end
    end
    
end

[Les Beckham]

How did you call the function? You can't just press the Run button. You need to provide the input data.

[per isakson]

How did you call the DFT ? What was the value of s ?

Answer 1

[Kiran Felix Robert]

Hi Partick,

Check the input argument when you call the DFT Function.

When you call from the command-line, provide sufficient input arguments.

On the Run button, use the extra options (type code to run) and provide proper input arguments to the function.

Try using a break point just after calling the function to debug the input argument data type.