[ncl-talk] total number of times in files opened with addfiles

[Dave Allured - NOAA Affiliate]

Here are two different ways to get the size of the time dimension.  The
second method uses dimension reduction to find the size of only one slice
of the 2-D character array.

dims = dimsizes (times)
ntimes = dims(0)

ntimes = dimsizes (times(:,0))


On Fri, Apr 1, 2022 at 11:04 PM Zilore Mumba <zmumba at gmail.com> wrote:

> I have 13 files, i.e. analysis plus 12 hourly files of forecasts.  print
> (files_all[0]->Times) and printVarSummary(times) give the following output:
> Variable: Times (file variable)
> Type: character
> Total Size: 19 bytes
>             19 values
> Number of Dimensions: 2
> Dimensions and sizes: [Time | 1] x [DateStrLen | 19]
> Coordinates:
> (0,0) 2
> (0,1) 0
> (0,2) 2
> (0,3) 2
> (0,4) -
> (0,5) 0
> (0,6) 3
> (0,7) -
> (0,8) 2
> (0,9) 8
> (0,10) _
> (0,11) 0
> (0,12) 0
> (0,13) :
> (0,14) 0
> (0,15) 0
> (0,16) :
> (0,17) 0
> (0,18) 0
>
> Variable: times
> Type: character
> Total Size: 247 bytes
>             247 values
> Number of Dimensions: 2
> Dimensions and sizes: [Time | 13] x [DateStrLen | 19]
> Coordinates:
>
>
> On Fri, Apr 1, 2022 at 11:53 PM Dave Allured - NOAA Affiliate <
> dave.allured at noaa.gov> wrote:
>
>> Please show print (files_all[0]->Times) and printVarSummary(times).
>>
>>
>> On Fri, Apr 1, 2022 at 3:42 PM Zilore Mumba via ncl-talk <
>> ncl-talk at mailman.ucar.edu> wrote:
>>
>>> I have a number of WRF output files, one file per hour, which I open with
>>> files_all = addfiles(FILES+".nc","r")
>>>
>>> I then get the times and the total number with.
>>>   times = files_all[:]->Times      ; get all times in the file
>>>   ntimes = dimsizes(times)         ; number of times in the file
>>>
>>> I think I am missing something here because  with print(ntimes) I see
>>> two numbers.
>>> I want to use ntimes in a loop: do it = 0,ntimes-1,2
>>>
>>> This gives me the error: fatal:Loop end must be scalar, can't execute
>>> loop.
>>> How do I get the times from files opened with addfiles. I will
>>> appreciate any assistance.
>>>
>>
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