RE: Concatenating netcdf files

[Rob Scott <rscott@xxxxxxxxxxxxxxxxxx>]

Ni hao Li, Yun:

Here is a script I wrote to join ncep files. You'll have to modify it, in 
hopefully obvious ways, to your application.

Best wishes,
Rob

! must specify:

DEFINE SYMBOL out_file = nlw_1990_2004.cdf


!------------------------------------------------------------------------------
! access many files:
!------------------------------------------------------------------------------
let names = {spawn:"ls nlwrs.sfc.gauss.????.nc"}



SET MEMORY/SIZE=528

SET DATA/regulart `names[i=1]`


LET/TITLE="Net Short Wave Radiation"/UNITS="W/m^2" \
   nlw = nlwrs

SAVE/CLOBBER/FILE=($out_file) nlw

!------------------------------------------------------------------------------
! now append the rest
!------------------------------------------------------------------------------

REPEAT/k=2:15 (LET a = names[i=`k`]; \
   SET DATA/regulart "`a` "; \
   SAVE/APPEND/FILE=($out_file) nlw; \
   CANCEL DATA /ALL)

!------------------------------------------------------------------------------
! did it work?
!------------------------------------------------------------------------------
USE ($out_file)
SHOW DATA





At 04:22 AM 1/20/2005, you wrote:
> Dear Ferret users,
>
> I download several netcdf files from NCEP/NCAR reanalysis daily surface
> pressure data, i.e.,
> pres.sfc.1948.nc, pres.sfc.1948.nc, ..., pres.sfc.2005.nc. I would be
> most grateful if you can let me know how to concatenate them into a
> single "pres.sfc.1948.2005.nc".
>
> Best regards,
>
> Yun Li
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Dr. Yun Li
> Senior Research Scientist
> CSIRO Mathematical and Information Sciences
> Leeuwin Centre, 65 Brockway Road, Floreat, WA 6014, Australia
> Postal Address:  CSIRO Mathematical and Information Sciences
>                          Private Bag 5, Wembley, WA 6913, Australia
> Phone: +61 8 9333 6388 Fax: +61 8 9333 6121
> URL: http://www.cmis.csiro.au/Yun.Li/
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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