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Date with microseconds in MATLAB

I have a table with a lot of dates like this: 17: 01: 11.356078. I know the data doesn't have microsecond processing precision. Also datevec is not good for this, infact the date became 3.5608e + 5 (milliseconds) using it. I need microsecond precision because I have to calculate delta times.

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If you have the option to use the latest R2014b, it includes a revision of date and time handling, including new objects datetime

that handle nanosecond precision.



Prior to that, you're a bit stuck if you need more than a millisecond accuracy, and you may need to implement your own way to store and manage your time, rather than relying on the built-in datenum

and datestr

etc.

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Existing date formats in matlab don't allow anything less than microseconds. Therefore, the solution is to avoid these formats.

A relatively easy way to do this is to divide the numbers. For example, there is 1 vector with dates rounded to the second and another vector with fractions of a second. This way you can get very high accuracy when needed.



Computing the difference would be done by adding the difference in seconds to the difference elsewhere. (Using a constant to scale the difference)

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The cleanest solution, in my opinion, would be to have a function that converts your input string to microseconds manually and creates a timestamp vector.

Unfortunately the date / time structure from Matlab doesn't show below milliseconds.

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the problem with the date is that you are limited to double precision. If you get rid of the day bias by supplying a date string 0-jan-0000-hrs:mins:secs

, the data is perfectly capable of resolving redemptive seconds. This is only useful if you are not interested in dates, but again it will be a problem, however you are converting to double

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