error: constant values

Hallo NCL,

Anybody can tell me why did I get the constant values using the output from
fourier filter:

(0) X2 contains all constant values at nx = 14
(0) X2 contains all constant values at nx = 29
(0) X2 contains all constant values at nx = 44
(0) X2 contains all constant values at nx = 59
(0) X2 contains all constant values at nx = 74
(0) X2 contains all constant values at nx = 89
etc

--
Here is my mini script:
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
  in = addfile("hgt.anom.nc","r")  ; climatology: 1989-2005
  z  = in->Z300                               ; (time,lat,lon)
  dimz = dimsizes(z)
  ntim    = dimz(0)
  nlat     = dimz(1)
  mlon   = dimz(2)
;****************************************
  CF = ezfftf (z)
  printVarSummary(CF)
  cf = CF
  cf(:,:,:,1:)  = 0.0
  z_wave1 = ezfftb (cf, 0.0)
  copy_VarMeta(z, z_wave1)
 X2  = onedtond( ndtooned(z_wave1), (/ *nxy*, *ntim* /) )
 if(any(ismissing(X2))) then
    print("X2 contains one or more missing values, cannot continue!!.")
    return
  end if
 xxx = dimsizes(X2)
 nx  = xxx(0)
 nt  = xxx(1)
 do i=0,nx-1
  pmin = min(X2(i,:))
  pmax = max(X2(i,:))
  if(pmin.eq.pmax) then
    print("X2 contains all constant values at nx = " + i)
  end if
end do
end

_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
Received on Sun Aug 4 07:48:22 2013