summation in matlab with for loop
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vishnuvardhan naidu tanga
2019-12-11
编辑: vishnuvardhan naidu tanga
2019-12-12
how can i write the code for the following equation using for loop and summation. here the bold and the underlined part of the equation has to be summed up with change in the i values and the end -i will be the highest constant of n.
W = (kappa*T_in)/(kappa-1)*(((P(i+1)/P(i))^((kappa-1)/kappa))-i);
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Jakob B. Nielsen
2019-12-11
Is it a running sum? In this case something like this, then the i'th entry in runningsum will be the sum of all previous iteration plus the current iteration.
n=100; %lets say you run 100 runs
runningsum=zeros(n,1);
for i=1:n
W(i) = (kappa*T_in)/(kappa-1)*(((P(i+1)/P(i))^((kappa-1)/kappa))-i);
runningsum(i)=sum(runningsum)+((P(i+1)/P(i))^((kappa-1)/kappa));
end
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Jakob B. Nielsen
2019-12-12
I dont have any simulink experience, but if functions work the same way as they do in 'regular matlab', then you simply do this, save it as RunningSumFunction.m on the path you work in, and call it in your simuling as W=RunningSumFunction(100); to do 100 runs, or 110 to do 110 runs or whatnot.
function W=RunningSumFunction(n)
running=zeros(n,1);
for i=1:n
running(i)=((P(i+1)/P(i))^((kappa-1)/kappa));
end
W = (kappa*T_in)/(kappa-1)*(sum(running)-n);
end
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