Attempted to access B(25,1); index must be a positive integer or logical.

Question

Sameer 2014-5-13

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https://ww2.mathworks.cn/matlabcentral/answers/129361-attempted-to-access-b-25-1-index-must-be-a-positive-integer-or-logical

编辑： Andreas Goser 2014-5-13

rowsCI = rows(swtCI);

B = sort(PQMatx(:,3)); h=1; while h<=rowsCI; UB=(1-swtCI(h,1)); UBB=UB/2; UBBB=1-UBB; UBBBB = UBB*swtN; J = B(UBBBB,1); disp('Upper Bound for swtCI(i,1)'); disp(J); M = B((((1-swtCI(h,1))/2)*swtN),1); disp('Lower Bound for swtCI(i,1)'); disp(M); h=h+1; end;

this is my code. why cant matlab access and display negative numbers?

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Answer 1

Andreas Goser 2014-5-13

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https://ww2.mathworks.cn/matlabcentral/answers/129361-attempted-to-access-b-25-1-index-must-be-a-positive-integer-or-logical#answer_136568

编辑：Andreas Goser 2014-5-13

It is not about "access and display negative numbers", it is about the indices. Like you would try to access B(-1) or B(1.2).

Verify the values with in the B(<value>) brackets. When you put this in a script and not execute from the command line, you also get a line number where to debug.