CODEWITHSUNDEEP
matlabunix-timestamp
hasdrubal
hasdrubal

Reputation: 1148

UNIX timestamp generator MATLAB

Is there an easy to use function in MATLAB to generate UNIX timestamps in millisecond precision. Somehow, in my search so far, I only come across human readable formats.

Upvotes: 1

Views: 860

Answers (2)

Robert Dodier
Robert Dodier

Reputation: 17576

int32(posixtime(datetime())) returns an integer number of seconds. You can, of course, multiply that by 1000 to get milliseconds, but I don't know how to read the clock to millisecond precision.

Documentation says posixtime and datetime were introduced in Matlab R2014b.

EDIT: Documentation says posixtime includes fractional seconds. So I guess you can multiply it by 1000 and take the integer part to get milliseconds.

Upvotes: 1

user2261062
user2261062

Reputation:

instruction now will return the number of days from Jan 0, 0000.

You can use the following formula to convert it to Unix time (note that I multiplied by 1000 to obtain the results in milliseconds instead of seconds).

int32(floor(60*60*24 * (datenum(now) - datenum('01-Jan-1970')))) * 1000

EDIT: I see that the returned value is not exactly the same as the one returned by http://www.unixtimestamp.com/

Returned value: 1471866676

From unixtimestamp: 1471859475

It differs by 116 minutes more o less. It might have something to do with leap seconds.

Upvotes: 3

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