## How can i allocate results in matrix with for loop?

### Dong-Gil Kim (view profile)

on 8 Dec 2018
Latest activity Edited by Stephen Cobeldick

on 9 Dec 2018

### Stephen Cobeldick (view profile)

i tried store my results of exp()... in matrix with for loop.
if you guys how would you do this?

### Stephen Cobeldick (view profile)

on 9 Dec 2018
Edited by Stephen Cobeldick

### Stephen Cobeldick (view profile)

on 9 Dec 2018

This is MATLAB, so just get rid of the pointless loops entirely:
>> w = 0:4;
>> t = 0:9;
>> y = exp(t.*w(:).*1i)
y =
Columns 1 through 5:
1.00000 + 0.00000i 1.00000 + 0.00000i 1.00000 + 0.00000i 1.00000 + 0.00000i 1.00000 + 0.00000i
1.00000 + 0.00000i 0.54030 + 0.84147i -0.41615 + 0.90930i -0.98999 + 0.14112i -0.65364 - 0.75680i
1.00000 + 0.00000i -0.41615 + 0.90930i -0.65364 - 0.75680i 0.96017 - 0.27942i -0.14550 + 0.98936i
1.00000 + 0.00000i -0.98999 + 0.14112i 0.96017 - 0.27942i -0.91113 + 0.41212i 0.84385 - 0.53657i
1.00000 + 0.00000i -0.65364 - 0.75680i -0.14550 + 0.98936i 0.84385 - 0.53657i -0.95766 - 0.28790i
Columns 6 through 10:
1.00000 + 0.00000i 1.00000 + 0.00000i 1.00000 + 0.00000i 1.00000 + 0.00000i 1.00000 + 0.00000i
0.28366 - 0.95892i 0.96017 - 0.27942i 0.75390 + 0.65699i -0.14550 + 0.98936i -0.91113 + 0.41212i
-0.83907 - 0.54402i 0.84385 - 0.53657i 0.13674 + 0.99061i -0.95766 - 0.28790i 0.66032 - 0.75099i
-0.75969 + 0.65029i 0.66032 - 0.75099i -0.54773 + 0.83666i 0.42418 - 0.90558i -0.29214 + 0.95638i
0.40808 + 0.91295i 0.42418 - 0.90558i -0.96261 + 0.27091i 0.83422 + 0.55143i -0.12796 - 0.99178i
If you really want to use pointless nested loops, then try this:
y = nan(5,10);
for t = 0:4
for w = 0:9
y(t+1,w+1) = exp(t*w*1i)
end
end

on 9 Dec 2018

y=zeros(6,10); %change this
ctr=1; %before loop
y(ctr,:)=.... change this part
ctr=ctr+1; % add this before last end (after the first end)- > inbetween two ends