[ncl-talk] gsn_csm_contour_map_ce error, flat field

[David Adams]

Hi NCLers
I am trying to plot of map of GOES IR Brightness temperature, but am
getting a flat field. When I print the data they're fine, the values are
correct.

The file I am using I created with
ncrcat
to put all of the 15 minutes GOES netcdf images into a daily file.  Maybe I
erred here, maybe something wrong with the time dimension.

Here is ncdump -h  of the file I want to plot
-------------------------------------------------------------------------------
ncdump -h test.nc
netcdf test {
dimensions:
    yc = 221 ;
    xc = 141 ;
    time = UNLIMITED ; // (130 currently)
variables:
    float new_temp(time, yc, xc) ;
        new_temp:time = 1372896900 ;
        new_temp:units = "K" ;
        new_temp:coordinates = "lon lat" ;
        new_temp:type = "GVAR" ;
        new_temp:long_name = "Temperature" ;
    float new_lat(time, yc, xc) ;
        new_lat:units = "degrees_north" ;
        new_lat:long_name = "lat" ;
    float new_lon(time, yc, xc) ;
        new_lon:units = "degrees_east" ;
        new_lon:long_name = "lon" ;
    int time(time) ;
        time:units = "seconds since 2013-185 00:15" ;

// global attributes:
        :history = "Mon Oct  6 18:26:36 2014: ncrcat
goes13_4_2013_185_0015_subset.nc ............
goes13_4_2013_185_2345_subset.nc test.nc\n",
            "Mon Oct  6 18:24:58 2014: ncatted -O -a units,time,c,c,seconds
since 2013-185 00:15 out.nc\n",
            "Mon Oct  6 18:24:58 2014: ncap2 -O -v -s time=array(0,0,$time)
out.nc\n",
            "Mon Oct  6 18:24:58 2014: ncrename -O -d record,time out.nc" ;
        :nco_openmp_thread_number = 1 ;
}
----------------------------------------------------------------------------------------------------------------------

Here is the map plotting code
-----------------------------------------------------------------------------------------------------------------------
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"

;*********************************
; read variable
;*********************************

f    = addfile("test.nc","r")
d    = f->new_temp          ; float data(time, yc, xc) ;
                           ; data:type = "IR" ;
   printVarSummary(d)
;*********************************
; Fix the variable so it has recognizable missing data
;*********************************
   new_lat  = f->new_lat
   new_lon  = f->new_lon

;*********************************
; create plot
;*********************************
   pltType = "pdf"                             ; "ps", "eps", "pdf", "png"
   pltDir  = "./"

   wks = gsn_open_wks(pltType, "test")
   gsn_define_colormap(wks,"BlAqGrYeOrReVi200"); choose a color map

   res                     = True
   res at cnFillOn            = True            ; turn on color
   res at cnFillMode          = "RasterFill"    ; cell mode
   res at cnLinesOn           = False           ; Turn off contour lines
  res at gsnSpreadColors     = True            ; use full colormap
   res at gsnAddCyclic        = False           ; data not cyclic
   res at gsnMaximize         = True            ; ps, pdf, pdf
   res at pmTickMarkDisplayMode = "Always"      ; use NCL default
   res at lbLabelAutoStride   = True            ; let NCL decide spacing
   res at mpMinLatF           = 23.0  ;    ; region to zoom in on
   res at mpMaxLatF           = 33.00  ;
   res at mpMinLonF           = -115.200   ;
   res at mpMaxLonF           = -102.20 ;
   res at mpFillOn            = False
   res at mpOutlineBoundarySets = "National"    ; turn on country boundaries
  res at trGridType          = "TriangularMesh"   ; Necessary b/c lat, lon
  res at lbLabelStride        = 5.0             ; every other label bar label

   plot = gsn_csm_contour_map_ce(wks,d(111,:,:), res)
----------------------------------------------------------------------------------------------------

Also, I am getting these warnings,

0)    check_for_y_lat_coord: Warning: Data either does not contain a valid
latitude coordinate array or doesn't contain one at all.
(0)    A valid latitude coordinate array should have a 'units' attribute
equal to one of the following values:
(0)        'degrees_north' 'degrees-north' 'degree_north' 'degrees north'
'degrees_N' 'Degrees_north' 'degree_N' 'degreeN' 'degreesN' 'deg north'
(0)    check_for_lon_coord: Warning: Data either does not contain a valid
longitude coordinate array or doesn't contain one at all.
(0)    A valid longitude coordinate array should have a 'units' attribute
equal to one of the following values:
(0)        'degrees_east' 'degrees-east' 'degree_east' 'degrees east'
'degrees_E' 'Degrees_east' 'degree_E' 'degreeE' 'degreesE' 'deg east'

Any ideas?

thanks in advance,
Dave
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