Re: [ferret_users] samplet_date

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi Carol,
Yes, they should return the same thing for hour 0 on your daily time axis.  I think Russ is on to the right idea, but in fact I think that the calculation needs even more of a fix to compute the correct result.  Please stand by.

Ansley

On 3/29/2012 4:26 PM, Carol Ladd wrote:

I am trying to extract certain dates from a time series using the samplet_date function but it is not returning what I would expect.  It looks like the function is interpolating between the dates and I don’t know if it is a problem with the samplet_date function or a problem with how I have my time axis defined.  I have attached my time series to use as an example:

 

yes? use urot2.nc

yes? sh d

yes? list/t=9-sep-1999 urot2

             VARIABLE : U_ROT[GT=TQSCT@ASN]

             FILENAME : urot2.nc

             Z (m)    : 0

             TIME     : 09-SEP-1999 00:00

         -13.24

 

yes? list SAMPLET_DATE(UROT2,1999,9,9,0,0,0)

             VARIABLE : SAMPLET_DATE(UROT2[D=urot2],1999,9,9,0,0,0)

             Z (m)    : 0

             T        : 1

         -12.92

 

Why are they not the same?

 

Thanks.

Carol

 

********************************************************

Carol Ladd

Oceanographer

 

NOAA/PMEL

7600 Sand Point Way

Building 3     

Seattle, WA                   

98115-6349                  

 

Phone: (206) 526-6024

Fax: (206) 526-6485

 

Email: carol.ladd@xxxxxxxx

 

********************************************************