How to split time in to hours, minutes and nanoseconds

Hello,

I would like to split my timserias in order to convert them to to nanoseconds, what I have so far is:

t = ('16:45:00.103450009'); 
tt=str2double(strsplit(t,':'));

But double shows only four numbers after decimal point, what would be the way to achieve this?

Answer 1

[madhan ravi]

see format and adapt whatever is suitable for you

format long g %at the very beginning

[Luna]

What is difference between format long g and format long only?

I always wondered that it seems it does the same thing for me.

[madhan ravi]

http://www.ece.northwestern.edu/local-apps/matlabhelp/techdoc/ref/format.html

[Guillaume]

As explained in the documentation of format,

• long: Long, fixed-decimal format with 15 digits after the decimal point for double values, and 7 digits after the decimal point for single values
• longG: Long, fixed-decimal format or scientific notation, whichever is more compact, with a total of 15 digits fordouble values, and 7 digits for single values.

The difference is actually obvious:

>> format long
>> 3.14
ans =
   3.140000000000000
>> 1e28
ans =
     1.000000000000000e+28
>> [3.14 1e28]
ans =
   1.0e+28 *
   0.000000000000000   1.000000000000000

>> format longg
>> 3.14
ans =
                      3.14
>> 1e28
ans =
                     1e+28
>> [3.14 1e28]
ans =
                      3.14                     1e+28

I find long completely useless (see last example where pi is reduced to 0). I only ever use longg or shortg

[madhan ravi]

Thank you very much Guillame for the beautiful explanation

Answer 2

[Luna]

Hi,

Run this code

format long 

then run your tt you will see long format in your command window.