Re: Is there any method similar as ndtooned but can move the missing values?

Hi Dachao,

You can use the ¡°ind¡± function to get all the missing locations from the 1D array, and then the ¡°ind_resolve¡± function to resolve the original values back to their original locations.
But, have you looked at the ¡°where¡± function, which allows you to operate on the original array without having to convert it to 1D first?

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

If you really need to work with a 1D array, then this is how you can use ¡°ind¡± and ¡°ind_resolve¡± (UNTESTED):

  a1D = ndtooned(a)
  ind_nomsg = ind(.not.ismissing(a1D))
  a1D_nomsg = a1D(ind_nomsg) ; Strip off all missing values
  npts = dimsizes(ind_nomsg)

;---Store indexes into original "a" array.
  dsizes_a = dimsizes(a)
  ind_res = ind_resolve(ind_nomsg,dsizes_a)

...Do something with a1D_nomsg...

;---Put modified values back into original positions.
  do n=0,npts-1
     a(ind_res(n,0),ind_res(n,1),ind_res(n,2)) = a1D_nomsg(n)
  end do

http://www.ncl.ucar.edu/Document/Functions/Built-in/ind_resolve.shtml
http://www.ncl.ucar.edu/Document/Functions/Built-in/ind.shtml

¡ªMary

On May 31, 2014, at 12:38 AM, Сó¦Ð·Ö±×Å×ß <54215407@qq.com> wrote:

> Dear all,
>
> I want to convert a multi-dimensional array to one-dimensional array, but there exist some missing values in the multi-dimensional, so I want move these missing values in the oen-dimensional array. Then do some progress, is there still any way I can re-convert the one-dimensional to multi-dimensional array?
>
> Thanks for your time. Have a nice afternoon.
>
> Best regards,
> Dachao
> --------------------------------------------------
> Dachao Jin, Post-Doctor
> ARC-ENV, Center for Advanced Information Science and Technology,
> University of Aizu, Tsuruga, Ikki-machi,
> Aizuwakamatsu-shi, Fukushima 965-8580,
> Japan
>
> Tel: +81242 37-2562
> E-mail: jindc@u-aizu.ac.jp
> ResearchGate: https://www.researchgate.net/profile/Dachao_Jin
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Received on Sun Jun 1 22:36:18 2014