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I keep getting the error Subscript indices must either be real positive integers or logicals.

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Michele Thompson
Michele Thompson 2017-9-30
关闭： MATLAB Answer Bot 2021-8-20
theta=linspace(-pi,pi,500);
P=[269.2 15913 8964 2421];
E1=0.206;
Nth=length(theta), NP=length(P);
r1=zeros(Nth,NP);
for i=1:Nth
c=1-(E1*cos(theta(i)));
for j=1:NP
r1=(E1*P(j))/c;
end
end

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Walter Roberson
Walter Roberson 2017-9-30
That code executes without difficulty for me. However you are overwriting all of r1 every iteration of j and every iteration of i. Perhaps you want
r1(i, j) = (E1*P(j))/c;

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