convert int32 dates to matlab date (datenum)

Question

Sri Adiyanti 2023-4-3

评论： Peter Perkins 2023-4-5

Hi,

I work on netcdf4 file of a 2D model output. Date datatype is int32, how can I convert this into matlab date (datenume) or datetime?

Thanks.

Answer 1

Stephen23 2023-4-3

编辑：Stephen23 2023-4-3

"Date datatype is int32"

You did not tell us the most important information, which is the epoch and step size.

Assuming that those dates are UNIX format (ie. epoch 1st Jan 1970, 1 second steps) then use DATETIME like this:

U = uint32(1680508182)
U = uint32
    1680508182
D = datetime(U,'convertfrom','posix')
D = datetime
   03-Apr-2023 07:49:42

Peter Perkins 2023-4-5

Stephen kind of buried the lede, which was "use DATETIME", not datenum.