MATLAB: Separate date from time

Question

hi,

i have timestamp in my data

such as:

874965478

which contains date and time

what I need is separate date from time

I try this

d=datestr(874965478/86400 + datenum('1/1/1970'))

and get

d =

22-Sep-1997 21:57:58

this result do not what i need, i want the timestamp remain integer but without time just date

can do that?

Answer 1

The function, floor, does it:

    >> floor( 874965478/86400 + datenum('1/1/1970') )
    ans =
          729655

and check the result

    >> datestr( ans, 31 )
    ans =
    1997-09-22 00:00:00
    >>

This, 729655, is serial date number.