[ncl-talk] satellite pixel data read

[Debasish Hazra]

Hi,
I am trying to read pixel file from GOES satellite using NCL and trying to
do map plot. I am following example 6 decribed here :
https://www.ncl.ucar.edu/Applications/Scripts/goes_6.ncl
But I am getting the following error :

fatal:Undefined identifier: (get_pi) is undefined, can't continue
fatal:["Execute.c":8575]:Execute: Error occurred at or near line 6 in file
./goesYXtoLatLon.ncl
fatal:Variable (PI) is undefined
fatal:["Execute.c":8575]:Execute: Error occurred at or near line 101 in
file ./goesYXtoLatLon.ncl
fatal:["Execute.c":8575]:Execute: Error occurred at or near line 15 in file
Satl_2dMap.ncl

I have attached my ncl program along with this email. Any help.
Thank you.
Debasish.
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