how to correct time ?

Hi all,

the from netCDF file shows:

time

Size: 365x1

Dimensions: time

Datatype: double

Attributes:

long_name = 'Time (hours since 1950-01-01)'

standard_name = 'time'

calendar = 'gregorian'

units = 'hours since 1950-01-01 00:00:00'

axis = 'T'

_ChunkSizes = 1

_CoordinateAxisType = 'Time'

valid_min = 534732

valid_max = 543468

and I want to get the time corrected to matlab time, I used the commands below:

    stime  = double(time);
    stime  = stime + datenum(1950,1,1,0,0); % create a time array in matlab time
    dtime = datevec(stime);

and here is the result (not correct):

dtime = 534732

534756

534780

534804

534828

534852];

I want to correct it to MATLAB time. Any help will be appreciated.

Thanks

Answer 1

[Walter Roberson]

Serial date numbers are in days; entries from the file are in hours. You are taking a base time in days (a good step in itself) and adding hours as if they were days.

There is a trick available here: whenever you populate a datevec or datetime field with a higher value than the normal per-cycle maximum, then the extra is carried up to as many fields above as necessary.

dtime = datetime(1950, 1, 1, time, 0, 0)

Looks like you would get 01-Jan-2011 12:00:00 to 31-Dec-2011 12:00:00

[Lilya]

Thank you a bunch!

I really appreciate your help Sir Walter