# How to reduce precision of digit after decimal point? Matlab (R2020a)

2 views (last 30 days)
taimour sadiq on 23 Oct 2020
Commented: Ameer Hamza on 10 Dec 2020
if i have
a = 1.2345 or
a = 22.34325 or
a = 334.659809832
i want to reduce precision after decimal point to two digit so results should be
a= 1.23
a = 22.34
a = 334.65
i have tried ceil,floor, vpa, round(a,2) but this doesnt give me the above required result... i have searched the matlab answer mostly old questions replied with "fprintf which may support older versions. Kidly Guide

Ameer Hamza on 23 Oct 2020
Edited: Ameer Hamza on 23 Oct 2020
If you are only concerned with displaying the results with two digits after the decimal, then you can use fprintf
a = 334.659809832
fprintf('a=%.2f\n', a)
Ameer Hamza on 10 Dec 2020
I am glad to be of help! :)

Mathieu NOE on 23 Oct 2020
hi
dirty trick , example to round to 2 digits after decimal :
aa = 0.01*round(a*100)
example :
0.01*round(pi*100)
ans =
3.1400
or when you convert to string :
disp(num2str(pi,3))
3.14
taimour sadiq on 24 Oct 2020
Thanks

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