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Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: num2str - leading zeros, is not working?
Replies: 5   Last Post: Mar 22, 2013 9:27 AM

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Saravanan Mani

Posts: 26
Registered: 6/3/11
Re: num2str - leading zeros, is not working?
Posted: Mar 22, 2013 8:59 AM
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"martin Müllinger" wrote in message <kih7gv$lc0$1@newscl01ah.mathworks.com>...
> Hi,
>
> i have the following problem.
>
> I need to convert an integer into a string and i want a leading zero.
>
> 3.1 --> 03.1
> 21.2222 --> 21.2
> 1 --> 01.0
>
> I tried :
> i=3.1
> disp(['i=',num2str(i,'%02.1d')])
> but the result is i=3.1e+000
>
> I tried
> i=3.1
> disp(['i=',num2str(i,'%02.1f)])
> but the result is i=3.1 without the leading zero?
>
> Any idea whats worng here?
>
> THX


Hello,

i=3.1;
disp(['i=',num2str(i,'0%2.1f')])
fprintf('0%2.2f\n',i)


Best Regards,
Saravanan Mani

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