[ncl-talk] error: fatal:The result of the conditional expression yields a missing value. NCL can not determine branch, see ismissing function

[Xi Chang]

Thanks NCL and Michael,

Do you know the source of this following *error: fatal:The result of the
conditional expression yields a missing value. NCL can not determine
branch, see ismissing function*

do j=0,173
  indices=ind(data1(j,:).lt.0.)
  first=indices(0)
    if(first.gt.121) then
      date(j)=(first-121)+365
        else
      date(j)=first+244
    end if
  delete(indices)
  delete(first)
end do




On Fri, Aug 22, 2014 at 5:40 AM, Michael Notaro <mnotaro at wisc.edu> wrote:

> I think this should work.
>
>
> Say, the daily time series is x(0:364).
>
> indices=ind(x.lt.0.)
> first=indices(0)
>
>
>
>
> On 08/21/14, Xi Chang  wrote:
> > Hallo NCL people,
> >
> > I have a question, i have a daily data 1D (point),, i&#39;d like to get
> the index which has the first negative value and save the index per year.
> if i have 20 years, then i&#39;ll have 20 indices which are associated with
> first negative value each year.
> >
> >
> > Thank you.
>
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