## A for loop need help ASAP

Asked by Nikolaos Zafirakis

### Nikolaos Zafirakis (view profile)

on 30 Apr 2019
Latest activity Closed by Stephen Cobeldick

### Stephen Cobeldick (view profile)

on 30 Apr 2019
I have a loop and I want to collect the output?
A are arrays 0:300
for i = 0:3:300
Fi = atan(-(A5(1,1+i)/A5(1,2+i)));
Theta = acos(A5(1,3+i));
Psi = atan(A3(1,3+1)/A4(1,3+i));
end

#### 1 Comment

Stephen Cobeldick

on 30 Apr 2019

### Torsten (view profile)

on 30 Apr 2019
Edited by Torsten

### Torsten (view profile)

on 30 Apr 2019

for i = 0:3:300
j = i/3 + 1;
Fi(j)= atan(-(A5(1,1+i)/A5(1,2+i)));
Theta(j) = acos(A5(1,3+i));
Psi(j)= atan(A3(1,3+i)/A4(1,3+i));
end

Nikolaos Zafirakis

### Nikolaos Zafirakis (view profile)

on 30 Apr 2019
Thanks for the reply, but it errors and says array indices must be positive integers or logical values!
Torsten

### Torsten (view profile)

on 30 Apr 2019
j = 0;
for i = 0:3:300
j = j + 1;
Fi(j)= atan(-(A5(1,1+i)/A5(1,2+i)));
Theta(j) = acos(A5(1,3+i));
Psi(j)= atan(A3(1,3+i)/A4(1,3+i));
end