change the number of digits after decimal point

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Hi everybody
how can I change the number of digits after decimal point? I have a matrix of float numbers i want to transform each number in this matrix from this form x.xxxxxxxxxxxxxxx to this form x.xxxx

Accepted Answer

Mahdi on 30 May 2014
Edited: Mahdi on 30 May 2014
You can use the sprintf or the format option. In your case, you can just type:
format short
into the command window.
jan on 30 May 2014
Thanks mehdi even it isn't a direct way but it gives what i need thanks a lot

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More Answers (2)

Image Analyst
Image Analyst on 30 May 2014
(I should add this to the FAQ.)
Image Analyst
Image Analyst on 30 May 2014
Edited: Image Analyst on 29 Nov 2014
You said you want (b) but then you say that you don't want to use sprintf() or format() or to use a string at all. Your last sentence indicates that you want it to stay a number not a string but that is option (a) and is the answer I gave you at the very start. Sorry but I still am not sure what you want. You're either changing the number (by chopping off digits) or you're not, which is it?

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rahul bathini
rahul bathini on 26 Jun 2015
I've made a simulation on BPSK modulation and semilogy plotted the SNR vs. BER. The plot is geometrically the same to the actual plot but deviates from BER = 0.00001.I think this is because matlab doesn't consider values below 4 decimal place while plotting , to what extent could this be the reason if not what could the reason be.plz someone help me

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