[ncl-talk] Reading NOAA ISD-Lite dataset

[Dennis Shea]

Did you look at NCL IO examples:
   https://www.ncl.ucar.edu/Applications/read_ascii.shtml
We create these pages for users to look at.

===

There is nothing 'special' about these ascii/text files.

After unzipping, these are simple files

2016 01 01 00    52   -36 10120   230    30 -9999 -9999 -9999
2016 01 01 01    45   -40 10122    90    30 -9999 -9999 -9999
[snip]
         ncol    = 12

    dasc = "./"         ; input directory for ascii files
    fid  = "*2016
<ftp://ftp.ncdc.noaa.gov/pub/data/noaa/isd-lite/2016/013470-99999-2016.gz>"
     ; a unique identifier for files
    fasc = systemfunc ("cd "+ dasc+" ; ls "+fid)
    pasc = dasc+fasc

    nfil = dimsizes(fasc)

    do nf=0,nfil-1

 ; You can now read the file via "asciiread".
       nrows = *numAsciiRow*
<https://www.ncl.ucar.edu/Document/Functions/Contributed/numAsciiRow.shtml>(pasc(nf))
  ; contributed.ncl
       data := *asciiread*
<https://www.ncl.ucar.edu/Document/Functions/Built-in/asciiread.shtml>(pasc,(/nrows,ncols/),"float")
       data at _FillValue = -9999.0

       yyyy := toint( data(:,0) )

etc

    end do

===

Please read the section:

*How to read multiple ASCII files into one variable in NCL*.

Good luck


On Mon, Jul 10, 2017 at 6:28 PM, Soumik Basu <sbasu at alaska.edu> wrote:

> Hi,
>
> I am wondering if there is any example in NCL showing how to read noaa
> isd-lite dataset and link the data to the list of stations.
>
> ftp://ftp.ncdc.noaa.gov/pub/data/noaa/isd-lite/
>
> Thank you in advance for any help.
>
> Thanks,
> Soumik
>
> --
> --
> "Learn from yesterday, live for today, hope for tomorrow. The important
> thing is not to stop questioning." - Albert Einstein
>
> ************************************************************
> **************************************
> Dr. Soumik Basu
> Post Doctoral Fellow, International Arctic Research Center, UAF,
> Fairbanks, AK, USA
> Nanjing University of Information Science and Technology, Nanjing, China
> PhD in Atmospheric Sciences
> M.Sc. in Atmospheric Sciences
> Email: suvro05 at gmail.com
> website: http://soumikbasu.weebly.com/
>
> ************************************************************
> ***************************************
>
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