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How to split time in to hours, minutes and nanoseconds

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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?

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Accepted Answer

madhan ravi
madhan ravi on 15 Nov 2018
Edited: madhan ravi on 15 Nov 2018
see format and adapt whatever is suitable for you
format long g %at the very beginning

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Guillaume
Guillaume on 15 Nov 2018
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
madhan ravi on 15 Nov 2018
Thank you very much Guillame for the beautiful explanation

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More Answers (1)

Luna
Luna on 15 Nov 2018
Hi,
Run this code
format long
then run your tt you will see long format in your command window.

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