Clear Filters
Clear Filters

Consider preallocating for speed

4 views (last 30 days)
Yudha Bosse
Yudha Bosse on 31 Dec 2020
Answered: Ameer Hamza on 31 Dec 2020
Hello,
i worked out the following code for my college assignment, and i got the error message as "consider for preallocation of speed "for the variable A. I've got this code from https://www.mathworks.com/matlabcentral/fileexchange/47281-fuzzy-traffic-light-controller for reference. i don't know how to clear this message pls help me.
A(i)=ceil(((x(b(i))+(enter/exit)*time); % warning message
for j=1:A(i)+1
x(b(i))=x(b(i))-exit;
xrand=round(abs(rand(1,4)));
x=x+xrand;
if x(b(i))<=0
x(b(i))=0;
createfigure2(x,y,figure1);
pause(exittime)
break
end
end

Accepted Answer

Ameer Hamza
Ameer Hamza on 31 Dec 2020
It is not an error message; it is just a warning. Pre-allocation helps make the code faster. Read my answer here to get a general idea: https://www.mathworks.com/matlabcentral/answers/614903-for-loop-preallocation-warning

More Answers (0)

Categories

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

Tags

Community Treasure Hunt

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

Start Hunting!