yes? show grid var
GRID INGRID
name axis
# pts start
end
VX LONGITUDE
180mr 21E
19E(379)
VY LATITUDE
90 r 89S
89N
normal Z
T_IN
1212 r 1
1212
yes? ! Define monthly calendar time axis; @ASN
data to it.
yes? def axis/t=1-jan-2000:1-dec-2052:1/unit=months/calendar=noleap
month_noleap
yes? let var_month = var[gt=month_noleap@asn]
yes? ! Define yearly calendar time axis.
Regrid to get annual averages.
yes? def axis/t=1-jan-2000:1-dec-2052:12/unit=months/calendar=noleap
year_noleap
yes? let var_year = var_month[gt=year_noleap@ave]
yes? plot/x=180/y=0 var_year
This is just an outline. You will want to think about whether
your monthly
data should be centered at the beginning or middle of the months and
years,
and so forth.
Ansley Manke
Will Lewis wrote:
Greetings Ferret Users,--I have monthly model data which are contained on a no-leapyear, non-calendar
axis, and I would like to create annual averages. I tried following the example
on the ferret website, but I run into the bugaboo of only the @ASN
transformation being allowed between non-calendar and calendar axes (as opposed
to the @AVE, which I need). I tried regridding the data to an artificial,
noleap calendar axis (i.e. defining an axis along the lines of
T="01-JAN-2000":"01-DEC-2100":1/unit=month") but still run into the same error
message when I try to regrid the data from that axis. Any suggestions?thanks much,
Will--
___
William Lewis (welewis@students.wisc.edu, will@blue.meteor.wisc.edu)
Department of Atmospheric Sciences / Center for Climatic Research
University of Wisconsin -- Madison