[ncl-talk] loop_query

[Dennis Shea]

I still find your question and the code confusing.

It takes time to look at code and determine what is happening. It is your
responsibility to pose clear questions and, if appropriate, a clean,
minimal script that illustrates the issue(s). We answer questions on a
volunteer basis. Our time is valuable too! You must help us help you!

Please read the addfiles and adfiles documentation.

http://www.ncl.ucar.edu/Document/Functions/Built-in/addfiles.shtml
http://www.ncl.ucar.edu/Document/Functions/Built-in/addfile.shtml

With addfiles ... please look at examples 1 and 2.

Note the difference between 'cat' (the default) and 'join' (alternate
approach)


---
Create a script that contains *only* this part of your code.


;---Read var1
      dir    = "/home/kunal/"
      fnames = systemfunc("ls " + dir + "DAY_*.nc")

      print(fnames)
      nfil = dimsizes(fnames)
      print("nfil="+nfil)
      print("---")

       a      = addfiles(fnames,"r")
       data = a[:]->bcfire(0,:,:)        ; only one timestep
       printVarSummary(data)        ; *****look at the structure ****  and
sizes


   DATA = a[:]->bcfire
   printVarSummary(data)  ; *****look at the structure ****

DATA should have something like (time,lat,lon) where

dimsizes(time) >1








On Fri, Mar 31, 2017 at 11:01 AM, Kunal Bali <kunal.bali9 at gmail.com> wrote:

> Sorry for creating the confusion.
>
> I changed the script as you suggested me and then run the attached script.
> But after running this, I am getting the file only of the single day
> instead of all 30 files separately.
>
>
>
> Kunal Bali
> Research Scholar
> Radio & Atmospheric Science Division
> CSIR - National Physical Laboratory
> New Delhi - 110012
> India
>
>
>
>
>
> On Fri, Mar 31, 2017 at 10:15 PM, Mary Haley <haley at ucar.edu> wrote:
>
>> Kunal,
>>
>> I'm a little confused by what you are asking for.  You said you wanted to
>> extract all 30 days of data instantly, which is what the previous
>> "addfiles" example was meant to show.  You don't need a loop to extract all
>> the data.
>>
>> Did you actually try my suggestion of changing your script to use
>> "addfiles" instead of "addfile"?  If so, and you are still having a
>> problem, then it would help to see the new version of your script.
>>
>> Maybe my confusion is with what you want to do with the data after you
>> extract all 30 days of data. Please be more specific if possible.
>>
>> Thanks,
>>
>> --Mary
>>
>>
>> On Thu, Mar 30, 2017 at 10:19 PM, Kunal Bali <kunal.bali9 at gmail.com>
>> wrote:
>>
>>> Dear Mary,
>>>
>>> Thanks for the suggestions.
>>> But still, it's extracting one file at a time, not extracting all the
>>> 30-day files separately of UK and NEP (as mentioned in the script).
>>>
>>>
>>>
>>> Kunal Bali
>>>
>>>
>>>
>>>
>>>
>>> On Fri, Mar 31, 2017 at 3:09 AM, Mary Haley <haley at ucar.edu> wrote:
>>>
>>>> Kunal,
>>>>
>>>> You should be able to use "addfiles" to open all your files, and then
>>>> read your data using the special [:] syntax:
>>>>
>>>>   dir    = "/home/kunal/"
>>>>   fnames = systemfunc("ls " + dir + "DAY_*.nc")
>>>>   a      = addfiles(fnames,"r")
>>>>   data = a[:]->bcfire
>>>>
>>>> For more information see our addfiles examples page:
>>>>
>>>> http://www.ncl.ucar.edu/Applications/addfiles.shtml
>>>>
>>>> --Mary
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Thu, Mar 30, 2017 at 12:42 PM, Kunal Bali <kunal.bali9 at gmail.com>
>>>> wrote:
>>>>
>>>>> Dear NCL users
>>>>>
>>>>>
>>>>> I have the data of 30 days. I want to extract this data with the
>>>>> loop.The attached script is based on to extract the data of a single day.
>>>>> So it's a tedious job to extract all the 30 days data one by one. So could
>>>>> anyone tell me that how to start the loop in the attached file so the I can
>>>>> get 30 days extracted data instantly.
>>>>>
>>>>> Thank You
>>>>>
>>>>> Regards
>>>>> Kunal Bali
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>>
>>>>
>>>
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>
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