Index in position 1 is invalid. Array indices must be positive integers or logical values?

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Deepesh Kumar Gupta 2021-10-3

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https://ww2.mathworks.cn/matlabcentral/answers/1465769-index-in-position-1-is-invalid-array-indices-must-be-positive-integers-or-logical-values

评论： Deepesh Kumar Gupta 2021-10-3

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why am getting this error?

the error massage is:

Index in position 1 is invalid. Array indices must be positive integers or logical values.
Error in secondparameterestimation (line 109)
Ppost= (1./((2*pi*sigma.^2)^(N./2))).*exp(-sum(I,2)./(2*sigma.^2));

Here is the main code:

N=12;
sigma=100;
Ymeasurement=[347.6192  349.8622  350.5189  351.6964  352.6208  358.4055  356.9439  358.2743  352.8084  350.9066  347.9320  349.0564];
I=zeros(1000,12);
pi=3.1415926;
for i=1:1000
    for k=1:12
        I(i,k)=(Ymeasurement(1,k)-(T{i}(k))).^2;
    end
end
Ppost= (1./((2*pi*sigma.^2)^(N./2))).*exp(-sum(I,2)./(2*sigma.^2));
Pmax=max(Ppost);
l=Ppost./Pmax;
    plot(ri,l,'r.')