[Thread Prev][Thread Next][Index]
Re: [ferret_users] Calculations between different time axis
Hi Paulo,
You need to re-grid the data to a common time axis. The simplest way
is to re-grid the data from year 2 onto the year 1 time axis. I'll
illustrate with a hypothetical ferret session:
use "model_output_year_1.nc"
use "model_output_year_2.nc"
let var_yr1 = var[d=1]
let var_yr2 = var[d=2]
let var_yr2_new_t = var_yr[gt=var_yr1]
!Plot differences
fill/z=1000/l=1 var_yr1 - var_yr2_new_t
----
Take a look at the ferret documentation on re-gridding - ferret makes
it quite straightforward for all kinds of re-gridding operations.
http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/Grids-Regions/GRIDS#_VPID_197
Cheers,
Paul
On Aug 11, 2009, at 1:11 PM, Paulo Santiago wrote:
Hi Ferreters,
I would like to calculate the differences between data with
different time axis.
The data are results from the same model (same xyz grid) for
different years.
I believe there's a simple and elegant way to do this task with
Ferret, but I can't imagine how.
Thanks in advance.
--
Paulo Santiago
[Thread Prev][Thread Next][Index]
Contact Us
Dept of Commerce /
NOAA /
OAR /
PMEL /
TMAP
Privacy Policy | Disclaimer | Accessibility Statement