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[ferret_users] filter
- To: ferret_users@xxxxxxxx
- Subject: [ferret_users] filter
- From: jaya kumar A <jayamet@xxxxxxxxx>
- Date: Thu, 07 May 2009 09:37:20 +0530
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- Sender: owner-ferret_users@xxxxxxxx
dear ferret users,
I have a doubt regarding low pass filter and running mean.
my data is like this
currently SET data sets:
1> ./u_10.1996.nc (default)
name title I J K L
U_10_MOD U_10_MOD1[GT=TIME@ASN] 1:360 1:177 ... 1:366
1) I want to 30 days low pass filter on above data and save that output data. i tried this way
let u10 = U_10_MOD[I=1:360,J=1:177,L=1:366]
let LP_u10 = LSL_LOWPASS(u10,30,366)
save/file=lowpass_u_10.nc LP_u10
!!!!!!!!!!but this is not working !!!!!!!!!!!!!!
2) i want to have 31 days running mean in above data
let rm_u10= u10[l=@spz:31]
!!!!!!!!normally plotting 31 days running mean we use plot/x=60/y=-20 u10[l=@spz:31]
save/file=runningmean_u10.nc rm_u10
!!!! but if i want to save 31 days running mean how i will do it
!!!!!!!!!what is the difference in 2 and 1 in ferret!!!!
kindly help me in this regards, may be i am wrong in thinking,
Thanks in advance for all suggestion
with regards
-
JAYAKUMAR A
Theoretical Studies Division
IITM, Pune-8
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