[ncl-talk] cnConstFEnableFill to enable fill

[Md. Jalal Uddin]

Sorry, sir. It was my mistake as I am making a function in NCL for the
first time. The following function,  I used for rainfall analysis, produced
a constant 0 value.

undef ("fftwavenumber")
function fftwavenumber (in)

local in,p,a,b,c,d,f,output

begin
    N=dimsizes(in)

   if mod(N,2).eq.0 then
         p=N/2     ; N even
   else
         p=(N-1)/2 ; N odd
   end if

pi=3.1416

a = new((/ p /), typeof(in),getVarFillValue(in))
b = new((/ p /), typeof(in),getVarFillValue(in))

do k=0,p-1
   a(k) = 0
   b(k) = 0
  do t=0,N-1
      a(k) = a(k) +(2/N)*( in(t)*cos(2*pi*k*t/N) )
      b(k) = b(k) +(2/N)*( in(t)*sin(2*pi*k*t/N) )
  end do
end do

f = new((/ k,t /), typeof(in),getVarFillValue(in))
output = new((/ t /), typeof(in),getVarFillValue(in))

do t=0,N-1
   do k=0,p-1
        f(k,t) = a(k)*cos(2*pi*k*t/N)+ b(k)*sin(2*pi*k*t/N)
   end do
   output(t)=(sum(f(0,t)))  ; 0 used for wave number one
end do

end

Any advice would be appreciated.

On Thu, 29 Aug 2019 at 22:02, Dennis Shea <shea at ucar.edu> wrote:

> Your response makes no sense to me.
> *ezfftf_n*
> <https://www.ncl.ucar.edu/Document/Functions/Built-in/ezfftf_n.shtml>
> *ezfftb_n*
> <https://www.ncl.ucar.edu/Document/Functions/Built-in/ezfftb_n.shtml>
>
> There are other FFT woutines ... look for them
>
> On Wed, Aug 28, 2019 at 9:20 PM Md. Jalal Uddin via ncl-talk <
> ncl-talk at ucar.edu> wrote:
>
>> Yes, sir. The variable got 0 value. Actually, it was a function in Matlab
>> for Fourier Decomposition (wavenumber 1). I am trying to transfer into NCL.
>> I would be happy to know if such function is available in NCL.
>>
>> On Wed, 28 Aug 2019 at 15:33, Rashed Mahmood <rashidcomsis at gmail.com>
>> wrote:
>>
>>> There is not enough information to say for sure, however, this is likely
>>> due to missing data values. Did you check if the variable that you trying
>>> to plot got missing values?
>>>
>>> Cheers,
>>> Rashed
>>>
>>> On Wed, Aug 28, 2019 at 6:49 AM Md. Jalal Uddin via ncl-talk <
>>> ncl-talk at ucar.edu> wrote:
>>>
>>>> Hi all,
>>>>
>>>> I got the following error message with a blank figure (attached).
>>>> *warning:ContourPlotInitialize: scalar field is constant; no contour
>>>> lines will appear; use cnConstFEnableFill to enable fill*
>>>>
>>>> I set a resource that did not work.
>>>> cnres at cnConstFEnableFill  = True
>>>>
>>>> Any advice?
>>>>
>>>> Jalal
>>>> --
>>>> *Md. Jalal Uddin*
>>>> MSc in Applied Meteorology
>>>> Nanjing University of Information, Science and Technology, China
>>>> B.Sc. in Disaster Management (Hons.)
>>>> Patuakhali Science and Technology University, Bangladesh.
>>>> Cell: +8613260859092, +8801792052662
>>>> Web: www.dmjalal90.weebly.com
>>>> Facebook: jalal.hossen.39
>>>> LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
>>>> _______________________________________________
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>>>
>>>
>>
>> --
>> *Md. Jalal Uddin*
>> MSc in Applied Meteorology
>> Nanjing University of Information, Science and Technology, China
>> B.Sc. in Disaster Management (Hons.)
>> Patuakhali Science and Technology University, Bangladesh.
>> Cell: +8613260859092, +8801792052662
>> Web: www.dmjalal90.weebly.com
>> Facebook: jalal.hossen.39
>> LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
>> _______________________________________________
>> ncl-talk mailing list
>> ncl-talk at ucar.edu
>> List instructions, subscriber options, unsubscribe:
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
>

-- 
*Md. Jalal Uddin*
MSc in Applied Meteorology
Nanjing University of Information, Science and Technology, China
B.Sc. in Disaster Management (Hons.)
Patuakhali Science and Technology University, Bangladesh.
Cell: +8613260859092, +8801792052662
Web: www.dmjalal90.weebly.com
Facebook: jalal.hossen.39
LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
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