I'm getting following error: Array indices must be positive integers or logical values.

Question

Arthur Bergé 2024-8-5，13:02

0
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https://ww2.mathworks.cn/matlabcentral/answers/2143016-i-m-getting-following-error-array-indices-must-be-positive-integers-or-logical-values

评论： Arthur Bergé 2024-8-5，18:22

Hi, when I test following code whit some easy nubers I get the error: Array indices must be positive integers or logical values. (in the line I(0) = b - a) I already tried clearing the workspace but the same error keeps popping up. What else could be the problem?

function  [H] = ComputeWeights(a,b,x)
n = length(x)-1;
I = ones(n+1);
I(0) = b - a;
I(1) = 0;
for i = 2:n+1
    I(i) = ((b-a)*((-1)^i + 1))/(2*(1-i^2));
end
for i = 0:n+1
    x(i) = ((2/(b-a))*(x-a))-1;
end
T = zeros(n+1,n+1);
for i = 0:n+1
    for k = 0:n+1
        T(i,k) = cos(k*acos(x(i)));
    end
end
H = linsolve(T,transpose(I));
end