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Re: [ferret_users] 3-day running mean using boxcar filter (@sbx)



Happy to hear that it worked Samir,
                                                          After saving the data with fln applied as a netcdf ( to be safe ) and applying again sbx should do the smoothing for you if I understand what you require  correctly.

with best regards,
Sudheer

On Mon, Jan 14, 2013 at 10:33 AM, samir pokhrel <pokhrelsamir@xxxxxxxxx> wrote:

Hi Sudheer,

 Thanks it seems to work and I got the gaps filled, however if I want the reliability of 3 day running mean average, as to what averaging function @ave is doing, do I need  to apply some more transformation, after that of @fln.

Sincere Regards

Samir




On Sun, Jan 13, 2013 at 9:44 PM, Sudheer Joseph <sjo@xxxxxxxxxxxxx> wrote:
Hi Samir,
                     If you do not have gaps more than 1 day a l@fln:3  if you have more lengthy gaps you may use fln:5 or so this will fill the gaps by linearly interpolating between the boundaries of gaps.

with best regards,
Sudheer

On Sun, Jan 13, 2013 at 8:14 PM, samir pokhrel <pokhrelsamir@xxxxxxxxx> wrote:
Dear Ferret users,

I am trying to make 3-day running mean of satellite data to avoids data gaps and to get complete coverage.

I have used @sbx transformation to get this, however the gap increases further indicating that this transformation does not account for the missing values, i.e if any grid has  missing value for a time step, despite of the same grid having valid values for other time step the transformation considers the final value to be missing. 

How to get @sbx transformation accountable for missing values within a grid, similar to what @ave function  treats it, or to use any other function effectively to get the running mean consisting of invalid values as well.

Anticipating the replies and thanking you all in advance

Sincerely

Samir Pokhrel
Climate and Global Modelling Division
Indian Institute of Tropical Meteorology
NCL Post, Pashan
Pune-411008
INDIA



--
with best regards

Sudheer

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Sudheer Joseph                                                                 
Scientist                                                                                    
Indian National Centre for Ocean Information Services (INCOIS)    
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Web- http://oppamthadathil.tripod.com
           --------------* ---------------
"The ultimate measure of a man is
not where he stands in moments of
comfort and convenience, but where
he stands at times of challenge and
controversy."
                        Martin Luther King, Jr.
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What we have done for others and the world remains and is immortal."
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--
Samir Pokhrel
Climate and Global Modelling Division
Indian Institute of Tropical Meteorology
NCL Post, Pashan
Pune-411008
INDIA



--
with best regards

Sudheer

**********************************************************************************
Sudheer Joseph                                                                 
Scientist                                                                                    
Indian National Centre for Ocean Information Services (INCOIS)    
Ocean Valley, Post Box No# 21,
IDA Jeedimetla P.O.                  
Hyderabad, Ranga Reddy District - 500 055
Andhra Pradesh, India.
TEl:+91-40-23044600(R),Tel:+91-9440832534(Mobile)
Tel:+91-40-23886047(O),Fax:+91-40-23892910(O)
E-mail:sjo@xxxxxxxxxxxxxx; sudheer.joseph@xxxxxxxxxsjo@xxxxxxxxxxxxx.
Web- http://oppamthadathil.tripod.com
           --------------* ---------------
"The ultimate measure of a man is
not where he stands in moments of
comfort and convenience, but where
he stands at times of challenge and
controversy."
                        Martin Luther King, Jr.
"What we have done for ourselves alone dies with us.
What we have done for others and the world remains and is immortal."
- Albert Pines
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