how to solve not enough input argument error?

I am getting this error while trying to run the code below

Error using /

Not enough input arguments.

Error in filex(line 241)

col = (s.MajorAxisLength/2)*cos(theta);

% Calculate centroid, orientation and major/minor axis length of the ellipse
s = regionprops(binaryImage,{'Centroid','Orientation','MajorAxisLength','MinorAxisLength'});
% Calculate the ellipse line
theta = linspace(0,2*pi);
col = (s.MajorAxisLength/2)*cos(theta);
row = (s.MinorAxisLength/2)*sin(theta);
M = makehgtform('translate',[s.Centroid, 0],'zrotate',deg2rad(-1*s.Orientation));
D = M*[col;row;zeros(1,numel(row));ones(1,numel(row))];

[KSSV]

What you are showing is a prt of code. Show us the full code with full error. The error is becuase to a function sufficient number of inputs are not passed.

Answer 1

[Stephen23]

Your code is not written to handle cases when s is non-scalar. Your code assumes that s is scalar, but does not check this an any way.

The error is very simple to reproduce, because s is empty (i.e. REGIONPROPS did not detect anything):

s = struct('MajorAxisLength',{})

s = 

  0×0 empty struct array with fields:

    MajorAxisLength

theta = linspace(0,2*pi);
col = (s.MajorAxisLength/2)*cos(theta)

Error using /
Not enough input arguments.

You need to decide what your code should do when s is non-scalar: throw an error or do some alternate processing.