Random Noise Generation Error

4 views (last 30 days)
Nicholas Wagter
Nicholas Wagter on 20 Jun 2019
Commented: Adam Danz on 26 Jun 2019
this is a question

Answers (1)

Adam Danz
Adam Danz on 20 Jun 2019
Edited: Adam Danz on 21 Jun 2019
You're running 96256 total loops which will take a while. It looks like you terminated the process while waiting.
To see the progress during execution, use waitbars. They will add slightly to the processing time but the benefit is that 1) you know it's working, 2) you can see how far the progress is, and 3) if there is an error, you can see exactly where in the loop(s) the error ocurred.
wb1 = waitbar(0,'i loop 0/376');
wb2 = waitbar(0,'j loop 0/256');
wb2.Position(2) = wb1.Position(2)-wb2.Position(4)-30; %put waitbar 2 under wb1
for i = 1:376
waitbar(i/376,wb1,sprintf('i loop %d/376',i))
for j = 1:256
waitbar(j/256,wb2,sprintf('j loop %d/256',j))
Noise = 5*randn(1,length(t1));
Decrease_Factor = 356; %if this is really a constant, move it out of the loop!
Dec_NSignal = decimate(Noise,Decrease_Factor);
Dec_NSignal2 = decimate(Dec_NSignal,3);
N(i,j,1:100) = Dec_NSignal2;
end
end
delete([wb1,wb2])
Also, properly allocate the N variable.
N = zeros(376,256,100);
  1 Comment
Nicholas Wagter
Nicholas Wagter on 21 Jun 2019
Ok, awesome thankyou so much for the advice!

Sign in to comment.

Categories

Find more on Loops and Conditional Statements in Help Center and File Exchange

Community Treasure Hunt

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

Start Hunting!