array error

Hi.
Could I have help understanding why this error is occurring when creating an
array in NCL?
When I create the array with numbers, I have no problem:
ncl 17> daily_arr = new((/29,15,21/),float)
ncl 18>

Yet, when I try to use scripting, I get an error:
ncl 23> daily_arr = new((/nt,LAT,LAN/),float)

fatal:_NclBuildArray: each element of a literal array must have the same
dimension sizes, at least one item doesn't

Also, where is this error described in the NCL docs?
Thank you for your time ahead of time.
Sincerely,
Erik

bash-3.1$ ncl
 Copyright (C) 1995-2007 - All Rights Reserved
 University Corporation for Atmospheric Research
 NCAR Command Language Version 5.0.0
 The use of this software is governed by a License Agreement.
 See http://www.ncl.ucar.edu/ for more details.
ncl 0> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
ncl 1> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
ncl 2> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
ncl 3> a =
addfile("Daily_Region_2_WRF-GFS_SEP_1st-24-hours-forecasts-00Z.nc","r")
ncl 4> lat2d = a->XLAT(0,0,:,:) ; WRF_grid lats
ncl 5> lon2d = a->XLONG(0,0,:,:) ; WRF_grid lons
ncl 6> rainnc = a->RAINNC ; Total Grid Scale Precipitation
ncl 7> rainc = a->RAINC ; Accumulated Total Cumulus Precipitation
ncl 8> times=a->Times
ncl 9>
ncl 10> nt = times(:,0,0) ; should be 29 days
ncl 11> ;nt = 29
ncl 12> printVarSummary(nt)

Variable: nt
Type: character
Total Size: 29 bytes
            29 values
Number of Dimensions: 1
Dimensions and sizes: [record | 29]
Coordinates:
Number Of Attributes: 0
ncl 13> LAT = lat2d(:,0)
ncl 14> LON = lon2d(0,:)
ncl 15> printVarSummary(LAT)

Variable: LAT
Type: float
Total Size: 60 bytes
            15 values
Number of Dimensions: 1
Dimensions and sizes: [south_north | 15]
Coordinates:
Number Of Attributes: 5
  stagger :
  units : degree_north
  description : LATITUDE, SOUTH IS NEGATIVE
  MemoryOrder : XY
  FieldType : 104
ncl 16> printVarSummary(LON)

Variable: LON
Type: float
Total Size: 84 bytes
            21 values
Number of Dimensions: 1
Dimensions and sizes: [west_east | 21]
Coordinates:
Number Of Attributes: 5
  stagger :
  units : degree_east
  description : LONGITUDE, WEST IS NEGATIVE
  MemoryOrder : XY
  FieldType : 104
ncl 17> daily_arr = new((/29,15,21/),float)
ncl 18> printVarSummary(daily_arr)

Variable: daily_arr
Type: float
Total Size: 36540 bytes
            9135 values
Number of Dimensions: 3
Dimensions and sizes: [29] x [15] x [21]
Coordinates:
Number Of Attributes: 1
  _FillValue : -999
ncl 19> delete(daily_arr)
ncl 20> daily_arr = new((/29,LAT,LON/),float)
fatal:_NclBuildArray: each element of a literal array must have the same
dimension sizes, at least one item doesn't
fatal:Execute: Error occurred at or near line 20

ncl 21> delete(daily_arr)
fatal:Variable (daily_arr) is undefined
fatal:Execute: Error occurred at or near line 21

ncl 22> daily_arr = new((/nt,dimsizes(LAT),dimsizes(LON)/),float)
fatal:_NclBuildArray: each element of a literal array must have the same
dimension sizes, at least one item doesn't
fatal:Execute: Error occurred at or near line 22

ncl 23> daily_arr = new((/nt,LAT,LAN/),float)

fatal:_NclBuildArray: each element of a literal array must have the same
dimension sizes, at least one item doesn't
fatal:Execute: Error occurred at or near line 23

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Received on Mon Feb 09 2009 - 13:22:43 MST