[ncl-talk] unable to run NCL on Ubuntu.

[Geeta Geeta]

Hi. 
I have loaded the pre-compiled binaries on Ubuntu by following the procedure on the Web. 
I could successfully run     
ng4ex gsun01n -clean                           and the window opened with a sinusodial wave plot. 


I was trying out a small script and got the following error. 
;;;;;;Error................................
aditya at agniilap:~/geeta/ncl/myscripts_ncl$ ncl test.ncl
 Copyright (C) 1995-2014 - All Rights Reserved
 University Corporation for Atmospheric Research
 NCAR Command Language Version 6.2.1
 The use of this software is governed by a License Agreement.
 See http://www.ncl.ucar.edu/ for more details.
fatal:["FileSupport.c":3605]:_NclFindFileExt: Requested file <$NCARG_ROOT/myscipts_ncl/test.nc> or <$NCARG_ROOT/myscipts_ncl/test> does not exist

fatal:["FileSupport.c":3973]:($NCARG_ROOT/myscipts_ncl/test.nc) has no file extension, can't determine type of file to open
fatal:file (a) isn't defined
fatal:["Execute.c":8578]:Execute: Error occurred at or near line 11 in file test.ncl
;;;;;;;;;;;;;;;;;;;;;;All my files exist in the Directory..........aditya at agniilap:~/geeta/ncl/myscripts_ncl$ ls -l
total 182456
-rw-rw-r-- 1 aditya aditya 18838952 May 27 22:27 fnl_20150423_12_00.grib2
-rw-rw-r-- 1 aditya aditya 83991480 May 27 22:29 fnl_20150423_12_00.nc
-rw-rw-r-- 1 aditya aditya 83991480 May 27 22:34 test.nc
-rw-rw-r-- 1 aditya aditya      528 May 27 22:44 test.ncl
aditya at agniilap:~/geeta/ncl/myscripts_ncl$ 

;;;;;;;;;;;;;;;;;test.nc has valid data;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;aditya at agniilap:~/geeta/ncl/myscripts_ncl$ ncdump -h test.nc | egrep "HGT_P0_L100"
    float HGT_P0_L100_GLL0(lv_ISBL0, lat_0, lon_0) ;
        HGT_P0_L100_GLL0:initial_time = "04/23/2015 (12:00)" ;
        HGT_P0_L100_GLL0:forecast_time_units = "hours" ;
        HGT_P0_L100_GLL0:forecast_time = 0 ;
        HGT_P0_L100_GLL0:level_type = "Isobaric surface (Pa)" ;
        HGT_P0_L100_GLL0:parameter_template_discipline_category_number = 0, 0, 3, 5 ;
        HGT_P0_L100_GLL0:parameter_discipline_and_category = "Meteorological products, Mass" ;
        HGT_P0_L100_GLL0:grid_type = "Latitude/longitude" ;
        HGT_P0_L100_GLL0:_FillValue = 1.e+20f ;
        HGT_P0_L100_GLL0:units = "gpm" ;
        HGT_P0_L100_GLL0:long_name = "Geopotential height" ;
        HGT_P0_L100_GLL0:production_status = "Operational products" ;
        HGT_P0_L100_GLL0:center = "US National Weather Service - NCEP (WMC)" ;
aditya at agniilap:~/geeta/ncl/myscripts_ncl$ 

;;;;;;;;;;;;Following is the script;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
begin
a=addfile("$NCARG_ROOT/myscipts_ncl/test.nc","r")
GPM850=a->HGT_P0_L100_GLL0(20,:,:)
printVarSummary(a)
wks = gsn_open_wks("png","ce")                  ; open a png file
  plot = gsn_csm_contour_map_ce(wks,GPM850,False)     ; create a default plot
end
;;;;;;;;;;;;Environment variable settingaditya at agniilap:~/geeta/ncl/myscripts_ncl$ echo $NCARG_ROOT
/home/aditya/geeta/ncl
aditya at agniilap:~/geeta/ncl/myscripts_ncl$ 
I am unable to sort out this Error. Pls help. 

Geeta.
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