[ncl-talk] Missing value set to -nan?

[Elizabeth Burakowski]

I'm running into an issue with missing values set to '-nan'.

dir= "/glade/p/work/burakows/nohrsc/mNOHRSC_mslt_200811_200904/"
fils= systemfunc("cd "+dir+" ; ls avg*.nc")
a=addfiles(dir+fils(1:4)+".nc","r")
ListSetType(a,"join")
b=a[:]->z

printVarSummary(b)  ; note that b at _FillValue is set to -nan & actual range
(0, 653)
print(min(b))             ; minimum value is showing up as -nan instead of 0
print(max(b))            ; maximum value is showing up as -nan instead of
653

I tried resetting the _FillValue to -9999:

b at _FillValue = -9999
printVarSummary(b)   ; now b at _FillValue is -9999, range is

Any ideas on how to get rid of the -nan?

Thanks,

Liz.
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