Re: about passing parameter

The following NCL script could be used to invoke another NCL script.
It shows two slight variations of a sample system command.

;===== Simulate the following in NCL============
;; #!/bin/bash
;; season=(JJA DJF MAM)
;; for ((k=0; k<${#season[@]}; k=k+1))
;; do
;; ncl 'se="${season[${k}]}"' test.ncl
;; done

    dq = str_get_dq() ; double quote (") as a string

    season = (/"JJA", "DJF", "MAM" /)
    do k=0,dimsizes(season)-1
       CMD = "ncl 'se="+dq+season(k)+dq+"' test.ncl"
      ;CMD = "ncl 'se="+dq+season(k)+dq+"' test.ncl >&! out.test."+k
       print(""+CMD)
       system(CMD)
    end do
;=========================================
The explicit creation of the 'CMD' variable was done so that you
could print the created string. It could be done directly via

    do k=0,dimsizes(season)-1
       system("ncl 'se="+dq+season(k)+dq+"' test.ncl")
    end do
++++++++++++++++++++++++++++++++++++++++++++
A trivial test.ncl script would be:

begin
   print("test.ncl : season="+se)
end

++++++++++++++++++++++++++++++++++++++++++++
Maybe somebody from the Python world would illustrate how
one would invoke the NCL script via Python.

On 3/14/14, 9:16 AM, David B. Reusch wrote:
> I think you just need additional single quotes (') on the call to ncl.
> The first goes before the "$" and the second goes after the "}". At
> least this is what I would do in csh and I'm assuming it's the same in
> bash. The way it is now, the shell is not substituting the season
> variable.
>
> Hope this helps,
> Dave
>
> wen said the following on 3/14/2014 7:53 AM:
>> Hi Dennis,
>> Thanks for you help. I write linux-shell-script to pass parameter of
>> type of string. It do not work. Do you know why? Following is the
>> linux-shell-script.
>>
>> #!/bin/bash
>> season=(JJA DJF MAM)
>> for ((k=0; k<${#season[@]}; k=k+1))
>> do
>> ncl 'se="${season[${k}]}"' test.ncl
>> done
>>
>>
>>
>>
>> --
>> ??
>> ???
>>
>> At 2014-03-14 21:23:55,"Dennis Shea" <shea@ucar.edu> wrote:
>> >Please read:
>> > http://www.ncl.ucar.edu/Document/Manuals/Ref_Manual/NclCLO.shtml
>> >
>> >There are many examples.
>> >
>> >
>> >%>ncl 'fil="sample.nc"' ys=1979 ye=2005 ex=0 lgen=1 minpre=0.1 lgex=2
>> >maxpre=3 day_int_amo_annual.ncl
>> >
>> >On 3/14/14, 6:54 AM, wen wrote:
>> >> Hi all, I run a ncl script by passing parameter as following. I
>> found it work well when the type of parameter is numerical type.
>> However, it did not work when the type of parameter is string. Could
>> ncl pass parameter of type of string? If anyone know that , please
>> tell me. Thank you!
>> >> ncl ys=1979 ye=2005 ex=0 lgen=1 minpre=0.1 lgex=2 maxpre=3
>> day_int_amo_annual.ncl
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> --
>> >>
>> >> Best wishes
>> >> Guanhuan Wen
>> >>
>> >>
>> >>
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>>
>>
>>
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Received on Fri Mar 14 10:58:11 2014