[ncl-talk] warning:Attempt to reference attribute (_FillValue) which is undefined

[Sri Nandini]

Hello All

I have a recurring error of: 
Re: warning:Attempt to reference attribute (_FillValue)
 which is undefined which gives me values of -nan.No matter how i try to resolve this using ncl online missing values definition table: https://www.ncl.ucar.edu/Document/Language/fillval.shtmlor from examples from the Forum: https://www.ncl.ucar.edu/Support/talk_archives/2014/1573.html              https://www.ncl.ucar.edu/Support/talk_archives/2012/1689.html
It doesnt seem to work and gives me output of missing values:Extract from code: t4Clm = dim_avg_n_Wrap( t4ann, 2)
   printVarSummary(t4Clm)                 ; (time,lat)
print(t4Clm) ;this prints out the numbers/values of temperature

         t4Clm1 = dim_avg_n_Wrap( t4Clm, 1)
   printVarSummary(t4Clm1)                 ; (time)
print (t4Clm1)  ;this gives all -nan
I use this for my plotting.

Much appreciated for any advice.

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