[ncl-talk] Help

[Dennis Shea]

There can't be a function for everything.

A generalization of Guido's suggestion

  X      = where(x.ne.0, x, x at _FillValue)
  xavg = dim_avg_n_Wrap(X, nDim)   ; read documentation
  printVarSummary(xavg)
  printMinMax(xavg, 0)
  delete(X)

or, less clear but without a temporary array

  xavg = dim_avg_n_Wrap(where(x.ne.0, x, x at _FillValue), nDim)
  printVarSummary(xavg)
  printMinMax(xavg, 0)

On Tue, Aug 1, 2017 at 8:47 AM, Guido Cioni <guidocioni at gmail.com> wrote:

> No, there is officially no function, but you can define a new one that
> does the job pretty well.
>
> Here is the prototype that goes before the program "begin".
>
> function avg_zeros(x:numeric)
> ; compute average not considering zeros,
> ; --> in:  rain rate
> ; <-- out: average rain rate
> local N
> begin
>  N=num(x .ne. 0)
>  return(sum(x)/ N)
> end
>
> Example of a function call
>
> rain=avg_zeros(ts->precp_r)
>
> Cheers
>
> On 1. Aug 2017, at 08:32, Arun Kumar Dwivedi <dwivedi.arunkumar at gmail.com>
> wrote:
>
> Hello All,
>
> In NCL ,how to calculate average of any array or data while ignoring all
> the zeros
> If there is any command or function, kindly let me know.
>
> Thanks & Regards
> Arun Kumar Dwivedi,
>
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>
> Guido Cioni
> http://guidocioni.altervista.org
>
>
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