[ncl-talk] Missing value

[Alan Brammer]

Did you try it?

I just quickly tested it and if any one variable is _Fillvalue then the
return is a fillvalue.

If that's not what you want and it's just addition you want you could build
an array from a,b,c and use dim_sum which will ignore fillvalues I believe.

Good luck,
Alan.
On 28 Sep 2014 17:20, "Xi Chang" <xi.chang01 at gmail.com> wrote:

> Hallo,
>
> How does NCL treat the missing value in a simple arithmetic calculation,
> e.g.;
> *X= A + B +C*
> if A is a missing value and B, and C is *non* missing value, so what's
> the result of X?
> is it missing value or is it equal to the value of B+C?
>
> Thanks
>
>
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