resizing array

Hi,

I am trying to change an array of size (180X360) to (46,72) by averaging the data. I see that NCL does not have a function by itself to do this unlike IDL (CONGRID & RESIZE). Please see my ncl script attached. If I run this, it give sme the following error
warning:avg: Entire input array contains missing values, can't compute average
warning:avg: Entire input array contains missing values, can't compute average
warning:avg: Entire input array contains missing values, can't compute average
warning:avg: Entire input array contains missing values, can't compute average
warning:avg: Entire input array contains missing values, can't compute average
warning:avg: Entire input array contains missing values, can't compute average
warning:avg: Entire input array contains missing values, can't compute average
warning:avg: Entire input array contains missing values, can't compute average
warning:avg: Entire input array contains missing values, can't compute average
warning:avg: Entire input array contains missing values, can't compute average
warning:avg: Entire input array contains missing values, can't compute average
warning:avg: Entire input array contains missing values, can't compute average
fatal:Subscript out of range, error in subscript #1
fatal:Execute: Error occurred at or near line 44 in file test1.ncl

Could you please help me with this.

My NCL script is attached as file.
Thanks.
Starry

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