Not Enough Input Arguments

Hi, I am new to Matlab and I am facing an error while generating a signal which i hae to use in other programs as well,

Here is the code which I am using to create signal,

if ~exist('coherence', 'var')
    coherence = false;
    rng('default')
end
if ~exist('nSamples', 'var')
    nSamples = 1e3;
end
if ~exist('amplitudes', 'var')
    amplitudes = zeros(1,numel(xPos));
end
if ~isvector(xPos)
    error('X-positions of array elements must be a 1xP vector where P is number of elements')
end
if ~isvector(yPos)
    error('Y-positions of array elements must be a 1xP vector where P is number of elements')
end
if ~isvector(zPos)
    error('Z-positions of array elements must be a 1xP vector where P is number of elements')
end
T = nSamples/fs;
t = 0:1/fs:T-1/fs;
signalTotal = 0;
for k = 1:numel(thetaArrivalAngles)
    %Create signal hitting the array
    doa = squeeze(steeringVector(xPos, yPos, zPos, f, c, thetaArrivalAngles(k), phiArrivalAngles(k)));
    %Add random phase to make signals incoherent
    if coherence
        signal = 10^(amplitudes(k)/20)*doa*exp(1j*2*pi*f*t);
    else
        signal = 10^(amplitudes(k)/20)*doa*exp(1j*2*pi*(f*t+randn(1, nSamples)));
    end
   %Total signal equals sum of individual signals
   signalTotal = signalTotal + signal;
end

When i run this program, I get the error shown below. I have no idea how to resolve it. Please can someone help me with this

Not enough input arguments.

Error in createSignal (bold part in code)

amplitudes = zeros(1,numel(xPos));

Answer 1

[Jan]

The message means, that xPos is not defined. I guess, that you forgot to provide input arguments to your function. Maybe you have pressed teh "Run" button in the editor, but a function must be called with input arguments.