[ncl-talk] Hargreaves reference evapotranspiration problem

[Dave Allured - NOAA Affiliate]

Subdivide the problem.  First examine arrays inside your generating script,
not output files.
Use printMinMax, print (num ( isnan_ieee(x) )), etc. to examine result
arrays and intermediate calculations, BEFORE writing files.  Examine files
only if you can show some discrepancy between what the script thinks it is
writing, and actual file contents.

--Dave


On Sat, May 11, 2019 at 6:12 PM Oluwaseun Ilori <wilseun at gmail.com> wrote:

> In addition also, I use the method of *refevt_hargreaves_fao56*
> <http://www.ncl.ucar.edu/Document/Functions/Crop/refevt_hargreaves_fao56.shtml>
> described in the NCL Application.
>
> Thanks
>
> On Sun, May 12, 2019 at 1:58 AM Oluwaseun Ilori <wilseun at gmail.com> wrote:
>
>> Good day,
>> I computed potential evapotranspiration using the example under ncl
>> application using hargreaves method and saved as netcdf file. when I tried
>> to view the data with simple plot of annual mean or so using both ncl and
>> ferret the displayed plot shows nothing rather than latitude and longitude
>> axis. i tried to print the MinMax of the REFEVT variable but the output
>> shows nan for both min and max values. I attached the script that I used to
>> compute the PET, ncdump output of the netcdf generated (result) and ncl
>> printMinMax and printVarSummary. Please I need help on what is wrong with
>> my script or result netcdf output.
>>
>> <http://www.ncl.ucar.edu/Document/Functions/Crop/refevt_hargreaves_fao56.shtml>
>> *OLUWASEUN ILORI*
>> *B.Tech(Hons) in Meteorology*
>>
>> *M.Tech in Meteorology and climate science (in view)*
>>
>> *Phone: +2347031000687 +2348069154213*
>> *Federal University of Technology Akure. Nigeria.*
>> *Facebook: *http://facebook.com/hilorywilson
>> <https://www.facebook.com/hilorywilson>
>> linkedln: https://www.linkedin.com/in/wilson-ilori-447952108
>> Twitter: HiloryW
>>
>
>
> --
> *OLUWASEUN ILORI*
> *B.Tech(Hons) in Meteorology*
> *M.Tech in Meteorology and climate science*
>
> *Phone: +2347031000687 +2348069154213*
> *Federal University of Technology Akure. Nigeria.*
> *Facebook: *http://facebook.com/hilorywilson
> <https://www.facebook.com/hilorywilson>
> linkedln: https://www.linkedin.com/in/wilson-ilori-447952108
> Twitter: HiloryW
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