Convert date text or serial date number to CDF formatted dates
E = cdfepoch(date)
E = cdfepoch(date) converts
the date, specified by
date, into a
be valid date value represented by text, as returned by
or a serial date number, returned by
also be a
When writing data to a CDF file using
cdfepoch to convert MATLAB® dates or
serial date numbers to CDF formatted dates. The MATLAB
CDFEPOCH data type in CDF files.
To convert a
cdfepoch object into a MATLAB serial
date number, use the
Convert the current time in serial date number format into a CDF epoch object.
% NOW function returns current time as serial date number dateobj = cdfepoch(now) dateobj = cdfepoch object: 11-Mar-2009 15:09:25
Convert the current time, which is returned by
text form, into a CDF epoch object.
% DATESTR function returns text representing a date dateobj2 = cdfepoch(datestr(now)) dateobj2 = cdfepoch object: 11-Mar-2009 15:09:25
Convert the CDF epoch object into a serial date number.
dateobj = cdfepoch(now); mydatenum = todatenum(dateobj) mydatenum = 7.3384e+005
A MATLAB serial date number represents the whole and fractional number of days from 0-Jan-0000 to a specific date. The year 0000 is merely a reference point and is not intended to be interpreted as a real year in time. The MATLAB serial date number calculates dates differently than CDF epochs.
A CDF epoch is the number of milliseconds since 1-Jan-0000.