[ferret_users] Appending time steps to netcdf file

["Stephen R. Guimond" <guimond@xxxxxxxxxxxxx>]

Hello,
 I have three netcdf files with different time steps that I want to 
combine into one file.  I have looked at the documentation/mail 
archives, but am still confused.  Here is what I did:
!################################
set memory/size=100

define axis/t="04-Aug-2000 06:00":"22-Aug-2000 12:00":6/units=hours time

define grid/t=time tgrid

use storm_3d_1.nc

let uprs2 = t[g=tgrid]*0 + uprs
let vprs2 = t[g=tgrid]*0 + vprs

save/file=storm_3d.nc/l=1:27 uprs2,vprs2

cancel var/all;cancel data/all

use storm_3d_2.nc

let uprs2 = t[g=tgrid]*0 + uprs
let vprs2 = t[g=tgrid]*0 + vprs

save/append/file=storm_3d.nc/l=28:67 uprs2,vprs2
!###############################################

I get this error:

**ERROR: inconsistent sizes of data regions: T axis
         UPRS has 13 points (L=28:40)
         expression has 40 points (L=28:67)
LIST/FORMAT=CDF/append/file=storm_3d.nc/l=28:67 uprs2,vprs2
Command file, command group, or REPEAT execution aborted

I don't know where the "13 points" are coming from.

Any suggestions?

Steve

=======================================================
Stephen R. Guimond
Graduate Research Assistant
Center for Ocean-Atmospheric Prediction Studies (COAPS)
Tallahassee, FL 32304
=======================================================

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