MATLAB: Cell contents reference from a non-cell array object error

Question

Error: Cell contents reference from a non-cell array object. I know that a input must be a cell array but thin is I don't know where went wrong when I put in a cell array…

Here's the code:

 function subset = GetClassSubsetIndexes(classes)
            subset=[];
            oldClassLabel = 'nekaLabela';
            for i=1 : 1 : length(classes)
                if oldClassLabel ~= classes{i}
                    oldClassLabel = classes{i};
                    subset = cat(1, subset, i);
                end
            end
            %now put end indicies
            for i=2 : 1 : size(subset,1)
                endIndex = subset(i, 1);
                subset(i-1, 2) = endIndex-1;
            end
            subset(size(subset,1), 2) = length(classes);           
        end

Need help Thanks!!! Ps: please don't close the question, it's quite important to me…

Answer 1

Your code is written to assume that LDA is called with the second parameter being a cell array of strings, but you are instead calling it with the second parameter being a column vector of double (such as a class number.)