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

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

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with best regards

Sudheer

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Sudheer Joseph
Scientist
Indian National Centre for Ocean Information Services (INCOIS)
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Samir Pokhrel
Climate and Global Modelling Division
Indian Institute of Tropical Meteorology
NCL Post, Pashan
Pune-411008
INDIA