MATLAB: How to make num2str output with 4 digits left of decimal? eg 0-> 0000

num2str

I am trying to get num2str to fomat its output with 4 digits. For example num2str(0) -> '0000' or num2str(125)-> '0125'

I know that there is a way to do this for digits after the decimal but I'm not sure how to do it for digits before the decimal.

Best Answer

you can format num2str using the following modifier to get the output I desired. num2str(125, '%04.f') -> '0125'

without the . after the 4 you get 125.0

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disp (['Iteration ' num2str(it) ': Best cost = ' num2str(Bestcosts(it))]);

MATLAB: How to use str2double without rounding

Hi,

maybe you need a proper set of the output display format:

https://it.mathworks.com/help/matlab/ref/format.html

The default format is "short", with the "long" format you can see more digits, look at the following example.

A = '0.219033048405430510873439814';
>> A
A =
0.219033048405430510873439814
>> str2double(A)
ans =
      0.2190
>> format long
>> str2double(A)
ans =
     0.219033048405431

Best Answer

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