Is there a way to reduce the precision of Matlab overall?
5 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Danny Miranda
am 12 Okt. 2016
Kommentiert: Danny Miranda
am 12 Okt. 2016
For my Power II course my professor has us doing Power Flow Analysis, and to speed things up I've coded an entire assignment into Matlab, and while my answers seem close to his own, he warns that he only used 4 decimal point precision. I'm curious if there is an easy way to reduce the precision of Matlab to better approximate my professor's answers? Might not be possible, but figured I would ask.
0 Kommentare
Akzeptierte Antwort
Walter Roberson
am 12 Okt. 2016
There is no global preference of any kind to reduce precision.
You could experiment with feature('setprecision'); see http://www.mathworks.com/matlabcentral/newsreader/view_thread/155369 and note that system_dependent() and feature() are the same thing.
You could also program using symbolic variables, in which case you can control the number of decimal digits used.
Weitere Antworten (1)
Matthew Eicholtz
am 12 Okt. 2016
Bearbeitet: Matthew Eicholtz
am 12 Okt. 2016
Here is a simple way to change the precision of a result:
n = 4; % number of desired decimal points
x = round(x*10^n)/10^n;
Obviously, this doesn't change some global precision preference (I don't know if there is one), but it should help with your assignment.
Siehe auch
Kategorien
Mehr zu Get Started with MuPAD 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!