Is there a way to reduce the precision of Matlab overall?
4 次查看(过去 30 天)
显示 更早的评论
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 个评论
采纳的回答
Walter Roberson
2016-10-12
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.
更多回答(1 个)
Matthew Eicholtz
2016-10-12
编辑:Matthew Eicholtz
2016-10-12
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.
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Get Started with MuPAD 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!