while executing this code in MATLAB iam getting an error like visualizeBoundary requiers more input arguments?

function visualizeBoundary(X, y, model, varargin)
plotData(X, y)
x1plot = linspace(min(X(:,1)), max(X(:,1)), 100)';
x2plot = linspace(min(X(:,2)), max(X(:,2)), 100)';
[X1, X2] = meshgrid(x1plot, x2plot);
vals = zeros(size(X1));
for i = 1:size(X1, 2)
   this_X = [X1(:, i), X2(:, i)];
   vals(:, i) = svmPredict(model, this_X);
end
hold on
contour(X1, X2, vals, [0 1], 'Color', 'b');
hold off;

end

Answer 1

[Yongjian Feng]

How did you call this function?

It looks like this function needs:

1. X: a nx2 matrix
2. y: not sure how it is used in plotData. Most likely a nx2 matrix as well, one value for each point of X?
3. model: a ML model?
4. varargin: other optional input arguments. Doesn't seem to be used at all in the function

So you need at least the first three input arguments, right?