[ncl-install] Error in running NCL

[Mary Haley]

Dear Min,

Did you open an X/Cygwin window?  You can't execute this command if you are just running from a Cygwin window. You should see a big "X" icon if you are running X/Cygwin.

Secondly, I recommend not setting DISPLAY, and let the X/Cygwin application set it for you. It should do this every time you run X/Cygwin.

If you are having trouble running X/Cygwin, sometimes I open a Cygwin window, and then type "startxwin" from that window. 

--Mary


On May 25, 2011, at 8:28 AM, min chen wrote:

> Hello
> 
> I am installing NCL on a Windows 7 (64bit) machine under Cygwin/X.
> After following the steps on http://www.ncl.ucar.edu/Download/cygwin.shtml , I found I am not able to run the script xy04n.ncl, which is copied from the installing directory without any revision. The error message is like:
> 
> $ ncl xy04n.ncl
>  Copyright (C) 1995-2010 - All Rights Reserved
>  University Corporation for Atmospheric Research
>  NCAR Command Language Version 5.2.1
>  The use of this software is governed by a License Agreement.
>  See http://www.ncl.ucar.edu/ for more details.
> warning:GKS:GOPWK: --X driver error: error opening display
> warning:GKS:GESC: --SPECIFIED WORKSTATION IS NOT OPEN
> 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:NhlDraw: Invalid Layer Id: -4
> fatal:Unable to update Workstation with PID#-4
> fatal:Unable to clear Workstation with PID#-4
> fatal:Execute: Error occurred at or near line 158 in file xy04n.ncl
> 
> Looks it is a FAQ of "error opening display". I "printenv DISPLAY" and get :0.0 , which looks reasonable. 
> 
> I face some problems when I was following the steps in the instruction. The first thing was I was not able to find X-startup-scripts package in Category X11 when I was installing Cygwin/X. Another problem is I didn't find the file ".cshrc" under my home/xxx directory (as discussed in the Set up your envrionment to run NCL section). Do these matter?
> 
> Thank you very much for your help!
> 
> Best regards,
> -- 
> Min Chen
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