Re: [ferret_users] Combine the variables of two difference file in unite file

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

Hi -
Yes, you can do all of this.  I'll point you to the commands you need, and show some example commands, and let you read the manual.  Then if you have more questions once you have gotten started, you are welcome to write back and ask

It sounds as if the variables U and V are on a staggered grid.  You can interpolate one of them onto the grid of the other using Ferret's regridding capabilities.  See "regridding" in the Users Guide.  Note that you have a choice of several regridding transformations to use.

You can apply a mask from another dataset.  Open both datasets, and specify each variable's dataset when using the different variables.

Finally, to add more variables to an existing file, you need the /APPEND qualifier.

These are the kinds of commands you will need.  When defining new variables, you probably also want to use /UNITS and /TITLE to give them the correct units and title before saving them.

yes? use data.nc
yes? use var.nc

yes? let v_regrid = v[d=1, gxy=u[d=1]

yes? let u_mask = u[d=1] * mask[d=2]
yes? let v_mask = v_regrid * mask[d=2]

yes? save/file=data.nc/append u_mask, v_mask

On 11/16/2010 12:56 PM, Farshid Daryabor wrote:

Dear All
Hi
Size of 'u' is (time*231*210) and 'v' is (time*230*211).
The variables of 'u' and 'v' are in unite file  "data.nc".
First I want change dimension of 'u' and 'v' to (time*230*210).
With the assumption that the other variable is "mask" in different file "var.nc" .
I want know who can save variables in one file with the above situation?
I know save multiple variable (yes?SAVE/FILE data.nc var1, var2,... ).
But I don't know the situation described above.
Can someone help me.
High appreciate
F.Daryabor