speed up max function
5 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Chaoyang Jiang
am 12 Apr. 2018
Kommentiert: Chaoyang Jiang
am 13 Apr. 2018
How to speed up max function? The following line [a,b] = max(c(1:24,1,2,3)) takes 2685.49s for calling 541390285 times. Is there any way to speed up?
c=randi(100,[24,3,3,3]);
for i=1:1000000
[a,b] = max(c(1:24,1,2,3));
end
0 Kommentare
Akzeptierte Antwort
dpb
am 12 Apr. 2018
A significant fraction is undoubtedly the addressing of the 4D array; the same fragment but
d=c(1:24,1,2,3);
for i=1:1000000
[a,b] = max(d);
end
cut the time by almost 50%. Whether the real application allows that simplification is unknown, but the concept of reducing the data structure overhead is key one.
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Variables finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!