Problem with looping: the loop does not stop
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Hello!
I have a problem that I have built a simple loop, which does not stop while running the code. Does anyone know what could be the issu? I have Matlab 2014.
Lw=106.5
hs=80
hr=1.5
a_air=0.0001
La=zeros(1,8000)
d=1:8000
for i=1:8000
if i<=1000
La(i)=Lw - 8 - 20*log(i) - 0.005*i
else
deltaLa=10*log(10^(Lw/10)) - 10*log(10^((Lw-sqrt(i)*a_air)/10))
La(i)=Lw - 8 - 20*log(i) - deltaLa + 10*log(i/1000)
end
end
Thank you!
1 Comment
Muhammad Usman
on 25 Apr 2020
Why are you using
d=1:8000
for loop check the if condition at every iteration, and will continue for 8000 in total.
So you can skip the for loop and just use 'd' array to compute your results
Lw=106.5;
hs=80;
hr=1.5;
a_air=0.0001;
La=zeros(1,8000);
d=1:8000;
if d<=1000
La(d)=Lw - 8 - 20*log(d) - 0.005*d
else
deltaLa=10*log(10.^(Lw/10)) - 10*log(10.^((Lw-sqrt(d)*a_air)/10));
La(d)=Lw - 8 - 20*log(d) - deltaLa + 10*log(d/1000)
end
Accepted Answer
Jamal Nasir
on 25 Apr 2020
Edited: Jamal Nasir
on 25 Apr 2020
%%% you can try this it work good %%%%
clc
clear
Lw=106.5
hs=80
hr=1.5
a_air=0.0001
d=1:8000
La=[];
for i=1:8000
if i<=1000
La=[La; Lw - 8 - 20*log(i) - 0.005*i];
else
deltaLa=10*log(10^(Lw/10)) - 10*log(10^((Lw-sqrt(i)*a_air)/10))
La=[La;Lw - 8 - 20*log(i) - deltaLa + 10*log(i/1000)];
end
end
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