Error using cell/ismember (line 34) Input A of class double and input B of class cell must be cell arrays of character vectors, unless one is a character vector. Error in untitled5 (line 190) if ismember(BW6(i,j),array1)~= logical(1)

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Golnoush Asaeikheybari 2019-5-23

0
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https://ww2.mathworks.cn/matlabcentral/answers/463717-error-using-cell-ismember-line-34-input-a-of-class-double-and-input-b-of-class-cell-must-be-cell-a

回答： Steven Lord 2019-5-23

Hi I defined array1 as array1={} and I am going to iterate over all elements of a matrix and if the matrix element has not been added to the array1 before, I want to add the elemnt to array1. I wrote the if statement as below but I constantly get error. What is my mistake?Thanks

                if ismember(BW6(i,j),array1)~= logical(1)
                    array1=[array1,BW6(i,j)]
                end

I get this error:

                Error using cell/ismember (line 34)
Input A of class double and input B of class cell must be cell arrays of character vectors, unless one is a character vector.
Error in untitled5 (line 190)
                if ismember(BW6(i,j),array1)~= logical(1)