Re: [ferret_users] Regridding monthly data to daily time scale

[Rob Scott <rscott@xxxxxxxxxxxxxxxxxx>]

Hi Murali

The @FLN is a function for filling in missing data on the same
grid, not a regridding function. 

So check out the regridding documentation at

Ch4
Sec2.4.  Regridding 

I think your script would work just by leaving out the @FLN, to
get the default regridding, or by replacing it with @LIN, or @AVE, etc.
(I can't promise this cause I haven't double checked.)

But be sure to plot the results and see what it looks like. Going from
low resolution to high resolution leads to a sort of step-like result
that might be undesirable for your application. You can play with
replacing the @FLN with @LIN, or @AVE, to get various versions of
regridding alogorithms.

Best wishes,
Rob


At 02:12 AM 9/27/2006, Murali Krishna wrote:
> Hi Users,
>
> Can any one tell, how to interpolate a monthly data to a daily time scale
> ???
>
> i tried out with the transformation @FLN but its not working..
>
> use my_data.nc
>
> ! given my monthly data a proper time axis
> define axis/t=15-jan-2005:15-dec-2005:30/units=days t30dy
> LET my_30dy_var = my_var[gt=t30dy@asn]
>
> ! regrid this data by daily Interpolation
> define axis/t=15-jan-2005:15-dec-2005:1/units=days t1day
> LET my_1dy_var = my_30dy_var[gt=t1day@FLN]
>
>
> Please help me to sort out this problem...
>
> Thanks in Advance..
> Murali Krishna

Rob Scott
Research Associate
Institute for Geophysics
University of Texas at Austin
4412 Spicewood Springs Rd.
Building 600
Austin, TX
78759

Office: +1-512-471-0375