# How to calculate all the numbers in an array with some conditions?

27 views (last 30 days)
ZIYI WENG on 3 Mar 2021
Commented: ZIYI WENG on 5 Mar 2021
I calculated some radian value of angles from the previouse code.
n = 8;
wl = 1;
d = wl./2;
AF = zeros(1,50);
th= 20;
and usd a for loop to display all the numbers of phi
for a = 1:n
AF = (a-1).*phi
end
The problem is I need the value of phi is restricted between-2pi and 2pi. (The angle value (th) I stated was 20 degree but it can be changed, such as -50 degree)
I tried the if elseif statement
for a = 1:n
AF = (a-1).*phi
if AF >= 2.*pi
AF = AF - 2.*pi;
elseif AF <= -2.*pi
AF = AF + 2.*pi;
end
end
It's not working and I am not sure what to do with it, hope to get help from you guys！ Thanks!

KALYAN ACHARJYA on 3 Mar 2021
Edited: KALYAN ACHARJYA on 3 Mar 2021
"The problem is I need the value of phi is restricted between-2pi and 2pi. (The angle value (th) I stated was 20 degree but it can be changed, such as -50 degree)"
Case 1: Any value you enter, which is restricted phi within -2pi to + 2pi.
n=8;
wl=1;
d=wl/2;
th=.....%Enter any Value
Case 2: Or you can limiting such data limiting case using while loop
n=8;
wl=1;
d=wl/2;
while true
if phi>=-2*pi && phi<=2*pi
break
else
disp('#Wrong data Input for th')
th=input('\n Re-Enter the th: ');
end
end
Case 3: you can nulify such data, if the condition is fail
##### 2 CommentsShowHide 1 older comment
ZIYI WENG on 5 Mar 2021
I solved it, thanks anyway!

R2020a

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!