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

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taimour sadiq
taimour sadiq 2020-10-23
评论： Ameer Hamza 2020-12-10
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

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采纳的回答

Ameer Hamza
Ameer Hamza 2020-10-23
编辑：Ameer Hamza 2020-10-23
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)
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taimour sadiq
taimour sadiq 2020-12-9
I m Very Gratefull to You Ameer i was struggling to do this for many weeks....Finally with your Guidence i have achieved the desired Goal... This is what i wanted...More than Thanks for ur Help and Support...

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更多回答（1 个）

Mathieu NOE
Mathieu NOE 2020-10-23
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

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