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change the number of digits after decimal point

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jan
jan el 30 de Mayo de 2014
Respondida: rahul bathini el 26 de Jun. de 2015
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
thanks

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Mahdi
Mahdi el 30 de Mayo de 2014
Editada: Mahdi el 30 de Mayo de 2014
You can use the sprintf or the format option. In your case, you can just type:
format short
into the command window.
  3 comentarios
Mahdi
Mahdi el 30 de Mayo de 2014
Editada: Mahdi el 30 de Mayo de 2014
Try putting format short into your script? Do you mind attaching your code? It should work for your purposes.
I strongly do not recommend doing it this way, but as a last resort, you can change your string to a number using str2num.
jan
jan el 30 de Mayo de 2014
Thanks mehdi even it isn't a direct way but it gives what i need thanks a lot

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Más respuestas (2)

Image Analyst
Image Analyst el 30 de Mayo de 2014
(I should add this to the FAQ.)
  4 comentarios
jan
jan el 30 de Mayo de 2014
Editada: jan el 30 de Mayo de 2014
Hi I'm looking for b but sprintf is to transform the data to string which isn't my interest fprintf for displaying and i used format short in the command window but nothing is change. I need to transform all the values in the matrix with only 4 digits numbers and not 15 because i will do a treatement on it so it isn't a problem of displaying
Image Analyst
Image Analyst el 30 de Mayo de 2014
Editada: Image Analyst el 29 de Nov. de 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 el 26 de Jun. de 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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