[ncl-talk] problem with missing values

[Gus Correa]

Your intent is to replace 9.92226e+36 by -9999.0.
This will leave any other values untouched.
[I think it will not enforce +9999.0 as an upper bound either,
if this is your assumption.]

However, can you guarantee that your data doesn't
have 9.6921e+36 amongst its values?
[Say, outliers, invalid data that was not QC'd, etc, or perhaps your
data range really goes all the way up to 9.6921e+36.]

Checking the actual input data values, before you do
any calculations, may help.
Choosing a missing_value/_FillValue outside the data range
is also helpful.


Gus Correa




On 12/12/2014 05:10 PM, Ipshita Majhi wrote:
> Thank you
>
> Yes it is a typo in the code I fixed it yet it still gives max value as
> 9.6921e+36 , and if I write to substitute it then it gives 9.92226e+36
> as the max value.
>
> Best Regards
> Ipshita
>
>
> On Friday, December 12, 2014, Gus Correa <gus at ldeo.columbia.edu
> <mailto:gus at ldeo.columbia.edu>> wrote:
>
>     Hi Ipshita
>
>     Is this a typo in your email or in the code?
>
>       > if (pweek(i,j).eq.9.92226ee+36)then
>
>     Note the double "ee".
>
>     Gus Correa
>
>     On 12/12/2014 04:29 PM, Ipshita Majhi wrote:
>      > Dear NCL ,
>      >
>      > I have written a code to write to convert 365 days into 52 weeks avg.
>      > I am facing error regarding missing value. I have written statements
>      > which have substituted missing value as -9999.0
>      > Yet it gives the maximum value as 9.96921e+36 and when I write to
>      > substitute that with -9999.0, it gives maximum value as 9.969222e+36.
>      > Here is the snippet of my code. I am very confused about this. It
>     will
>      > be great if somebody could help me
>      >
>      > set_default_fillvalue("float", -9999.0)
>      >
>      > pweek=new((/47,52/),"float")
>      >
>      >
>      > do i=0,47-1
>      > do j=0,357,7
>      >
>      > pweek(i,j/7)=avg(x364(i,j:j+6))
>      >
>      > ;  end if
>      > end do
>      > end do
>      >
>      >
>      > do i=0,47-1
>      > do j=0,51
>      > print(i)
>      > print(j)
>      > if (pweek(i,j).eq.9.92226ee+36)then
>      > pweek(i,j)=9999.0
>      > end if
>      > end do
>      > end do
>      >
>      > printMinMax(pweek, 0)
>      >
>      > Thank You
>      > Best Regards
>      > Ipshita
>      >
>      >
>      >
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