How to round up to closest 0 or 5 in array?

Question

SL 2016-10-25

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/309097-how-to-round-up-to-closest-0-or-5-in-array

编辑： SL 2016-10-25

Code

 utp = [420.680537950975, 412.407955038480, 389.575547217989, 366.089887932711, 363.090652446469, 352.095749639858]; 
 % https://se.mathworks.com/matlabcentral/answers/14495-rounding-elements-in-array-to-nearest-0-25
 up = ceil(utp * 2) / 2;
 down = floor(utp * 2) / 2;

Expected output

I started to think to make an for-loop for the task but really - it does not feel like MATLAB.

Maybe, there is something built-in.

MATLAB: 2016b OS: Debian 8.5

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Answer 1

Walter Roberson 2016-10-25

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/309097-how-to-round-up-to-closest-0-or-5-in-array#answer_240640

round(utp*5)/5

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John D'Errico 2016-10-25

编辑：John D'Errico 2016-10-25

oops. To round to the nearest multiple of 5, I expect you meant to write:

round(utp/5)*5

SL 2016-10-25

编辑：SL 2016-10-25

Yes, there is a typo in Walter's answer. John's correction is valid. It would be great to get some explanation in your answer such that it would be more generic. Now, I do for instance this 1 `utp = utp * 1000; utp = round(utp/5)*; utp = utp / 1000;` to get dimensions match in cases where integers are not significant. Maybe, just add a notification that it is designed for integers is the best option here.

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