Converting Double to String: Preserving the Last Digit

[NoobixCube]

Hi all,
I am converting a double to a string. But in the following case:
-----------
format long
numnum=546.790;
num=num2str(numnum)
length(num)
---------------
when 'numnum' is converted to a string, the command truncates the number by leaving off the last digit, the zero. Is there a way to keep the zero on there when converting to a string?

 

[marcusl]

Yes, specify the format as a floating point number
num2str(numnum,'%3.3f')
or use one of the other formats (scientific notation, etc.) listed in the Help manual. Check the Help entry for num2str and you'll see a clickable link to the format list.

 

[oswaler]

Hello,

Thank you for bringing this issue to our attention. When converting a double to a string, the trailing zeros are typically removed by default as they are not significant digits. However, if you would like to preserve the last digit, you can use the 'sprintf' function instead of 'num2str'. This function allows you to specify the number of decimal places you want to include in the string. For example, in your case, you can use the following code:

num = sprintf('%.3f', numnum)

This will convert the double 'numnum' to a string with three decimal places, including the trailing zero. You can adjust the number of decimal places as needed.

I hope this helps. Let me know if you have any further questions.

Best,