problem while running ng4ex gsun01n -clean

Dear Ncl-talk,

I have downloaded ncl_ncarg-6.1.2.MacOS_10.7_64bit_nodap_gcc450.tar
for my mountain lion. I got error while executing ng4ex gsun01n
command which is as follows.

MacBook-Pro:ncl-6.1.2 root# ng4ex gsun01n -clean

NCAR Graphics NCL Example <gsun01n>

This example was set up to display the output to an
X11 window.

  Copying gsun01n.ncl

Running NCL...
 Copyright (C) 1995-2013 - All Rights Reserved
 University Corporation for Atmospheric Research
 NCAR Command Language Version 6.1.2
 The use of this software is governed by a License Agreement.
 See http://www.ncl.ucar.edu/ for more details.
No protocol specified
warning:GKS:GOPWK: --X driver error: DISPLAY environment variable not set
fatal:Workstation with PID#8 is not open
fatal:Unable to open Workstation-Can't Create
fatal:Unable to access object with id:-4
fatal:_NhlCreate:Invalid Parent id #-4
fatal:NhlGetValues:PID #-4 is invalid
fatal:["Execute.c":8128]:Execute: Error occurred at or near line 11832
in file $NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl

fatal:["Execute.c":8126]:Execute: Error occurred at or near line 12

Finished running 'ncl < gsun01n'...
;-------------------------------------------------------------------
Also I am getting,

MacBook-Pro:ncl-6.1.2 root# locate libgfortran.3.dylib

WARNING: The locate database (/var/db/locate.database) does not exist.
To create the database, run the following command:

  sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.locate.plist

Please be aware that the database can take some time to generate; once
the database has been created, this message will no longer appear.
,----------------------------------------------------------------------

I would appreciate any help on it.

Thank You.
Sangeet Maharjan.
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Received on Thu Dec 19 22:13:02 2013