[ncl-talk] Problems converting hdf to netcdf using NCL

[BLIUJUS, STEVEN D CTR USAF AFMC AFLCMC/HBAW-OL]

I wanted to provide an example of what is in the hdf file. See attached.

Steve

-----Original Message-----
From: ncl-talk-bounces at ucar.edu [mailto:ncl-talk-bounces at ucar.edu] On Behalf Of BLIUJUS, STEVEN D CTR USAF AFMC AFLCMC/HBAW-OL
Sent: Friday, May 22, 2015 10:36 AM
To: ncl-talk at ucar.edu
Subject: [ncl-talk] Problems converting hdf to netcdf using NCL

I am taking several hdf files (200-400) and trying to generate one NetCDF file. I am able to plot it on a grid, but when I try to write to a NetCDF file, I get the following error:

fatal:Number of dimensions in parameter (2) of (filedimdef) is (2), (1) dimensions were expected
fatal:["Execute.c":8128]:Execute: Error occurred at or near line 82 in file File.ncl


The data I am creating is AOD with two dimensions (lat/lon). I am uncertain as to why it is expecting one dimension. Below is my script. FYI, the original files had to be manipulated in order to make AOD have the lat/lon dimensions. Any help would be greatly appreciated.


load "/home/bliujuss/ncl/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "/home/bliujuss/ncl/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl"
load "/home/bliujuss/ncl/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
load "/home/bliujuss/ncl/lib/ncarg/nclscripts/csm/shea_util.ncl"
begin

diri = "/home/bliujuss/Verification_data/Test/"
fili = systemfunc("ls "+diri+"*.hdf")
a = addfiles(fili,"r")

;ListSetType(a,"cat")

var1=a[:]->Optical_Depth_Land_And_Ocean(:,:)
Optical_Depth_Land_And_Ocean = short2flt(var1)

var2=a[:]->Longitude(:,:)
Longitude=var2


var3 = a[:]->Latitude(:,:)
Latitude=var3

dims = dimsizes(Optical_Depth_Land_And_Ocean)
nrows = dims(0) ;203
npixels = dims(1) ;135

lat2d = new((/nrows,npixels/),float)
lon2d = new((/nrows,npixels/),float)

do i=0,npixels-1
  lat2d(:,i) = Latitude(:,i)
end do

do i=0,nrows-1
  lon2d(i,:) = Longitude(i,:)
end do

Optical_Depth_Land_And_Ocean at lat2d = lat2d(::5,::5) Optical_Depth_Land_And_Ocean at lon2d = lon2d(::5,::5)


wks = gsn_open_wks("x11","plot_aod")
gsn_define_colormap(wks,"NCV_banded")
setvalues NhlGetWorkspaceObjectId()
  "wsMaximumSize": 300000000
end setvalues

res                   = True               ; plot mods desired
res at cnLinesOn         = False              ; turn off contour lines
res at cnFillOn          = True               ; color plot desired
res at cnLineLabelsOn    = False              ; turn off contour lines
res at gsnAddCyclic      = False             ; non-global data
res at gsnSpreadColors   = True               ; use full range of colormap
;res at cnFillMode        = "RasterFill"       ; turn on raster mode
res at lbLabelAutoStride = True               ; nice spacing of lables
res at gsnMaximize       = True               ; blow up plot as much as poss
;print(min(lat2d))
;print(max(lat2d))
;print(min(lon2d))
;print(max(lon2d))

plot = gsn_csm_contour_map_ce(wks,Optical_Depth_Land_And_Ocean(::5,::5),res)
print(max(Optical_Depth_Land_And_Ocean(::5,::5)))

nlat = dimsizes(lat2d(::5,::5))
nlon = dimsizes(lon2d(::5,::5))

diro = "/home/bliujuss/Plots/"
filo = "example.nc"
system("rm -f" + diro + filo)
fout = addfile (diro + filo, "c")

setfileoption(fout,"DefineMode",True)

dim_names = (/"lat", "lon"/)
dim_sizes = (/nlat, nlon/)
dimUnlim = (/False, False/)
filedimdef(fout,dim_names,dim_sizes,dimUnlim)

filevardef(fout, "lat", typeof(lat2d(::5,::5)),getvardims(lat2d(::5,::5)))
filevardef(fout, "lon", typeof(lon2d(::5,::5)),getvardims(lon2d(::5,::5)))
filevardef(fout, "AOT", typeof(Optical_Depth_Land_And_Ocean(::5,::5)),getvardims(Optical_Depth_Land_And_Ocean(::5,::5)))

filevarattdef(fout,"AOT", Optical_Depth_Land_And_Ocean(::5,::5))
filevarattdef(fout,"lat", lat2d(::5,::5)) filevarattdef(fout,"lon", lon2d(::5,::5))

setfileoption(fout,"DefineMode",False)

fout->Optical_Depth_Land_And_Ocean(::5,::5) = 
fout->(/Optical_Depth_Land_And_Ocean(::5,::5)/)
fout->lat2d(::5,::5) = (/lat2d(::5,::5)/)
fout->lon2d(::5,::5) = (/lon2d(::5,::5)/)

end


Steven Bliujus


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