Conversion to double from cell is not possibel

Question

Seum Bin Rahman 2019-9-7

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/479321-conversion-to-double-from-cell-is-not-possibel

评论： Seum Bin Rahman 2019-9-7

for j=1:1:P

reference=pointlist{j,1}

A = raw{strcmp(data,reference),2};

B = raw{strcmp(data,reference),5};

C = raw{strcmp(data,reference),6};

D = raw{strcmp(data,reference),11};

E = raw{strcmp(data,reference),12};

F = raw{strcmp(data,reference),13};

G = raw{strcmp(data,reference),14};

H = raw{strcmp(data,reference),15};

I = raw{strcmp(data,reference),16};

T(j,2:10) = table(A,B,C,D,E,F,G,H,I);

end

The error is; "Conversion to double from cell is not possible."

At this line T(j,2:10) = table(A,B,C,D,E,F,G,H,I);

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Answer 1

Guillaume 2019-9-7

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https://ww2.mathworks.cn/matlabcentral/answers/479321-conversion-to-double-from-cell-is-not-possibel#answer_390801

Whatever T is, it's very likely that:

T(j, 2:10) = a_table

is going to be an error.

Now, I wouldn't expect that line to throw the error you get if table is the table function, Perhaps, you've created your own table function or have a variable called table.

I'm not sure what your line is supposed to do, but it doesn't make sense.

Note that assuming you are indeed created tables, then:

for j = 1:numel(pointlist)  %assuming that size(pointlist) is [P, 1]
    reference = pointlist{j};
    something = cell2table(raw(strcmp(data, reference), [2, 5, 6, 11:16]));  %convert columns 2, 5, 6, 11:16 of raw to table for the rows that match
    %... possibly more code
end

would be a lot simpler. Sequentially named variables are almost always an error.

I've no idea what something is supposed to be since you haven't explained what your code is meant to do.