[ncl-install] ncl not seeing NCARG_ROOT?

[Dave Allured - NOAA Affiliate]

On my institutional system, the sys admins will sometimes put NCL inside a
wrapper script, invisible to casual use.  This is done specifically to be
able to redefine $NCARG_ROOT and make other possible changes, to make a
working NCL.  You might check to see if something like this is active in
your ubuntu install, and not working right.  The "where ncl" command may be
useful.

You could try a test script with these tests, without first trying to
"load" anything.

    print (getenv ("NCARG_ROOT"))
    system ("echo $NCARG_ROOT")
    system ("env | grep NCARG")

--Dave A.


On Fri, Feb 16, 2018 at 4:11 PM, Kevin Hallock via ncl-install <
ncl-install at ucar.edu> wrote:

> Hi Dave,
>
> Are you using the ncl-ncarg package provided via apt on Ubuntu? I just
> tried running the same ‘load "$NCARG_ROOT/lib/ncarg/
> nclscripts/csm/gsn_code.ncl"’ command on an Ubuntu 16.04 system using NCL
> 6.3.0 from the ncl-ncarg apt package and experienced the same error.
>
> I was, however, able to successfully run the “load” command on the same
> machine using one of our precompiled binaries
> <http://ncl.ucar.edu/Download/> (specifically ncl_
> ncarg-6.4.0-Debian8.6_64bit_gnu492.tar.gz for Ubuntu 16.04).
>
> I’m not sure why the ncl-ncarg package seems to be broken, but
> unfortunately we are not the maintainers of that package. If you continue
> to experience issues like this, I would strongly recommend using either a precompiled
> NCL binary <http://ncl.ucar.edu/Download/> or installing NCL via conda
> <http://ncl.ucar.edu/Download/conda.shtml>.
>
> Additionally, the ncl-ncarg package provides NCL v6.3.0, which was
> released in March 2015. Both of the alternative installation methods I
> linked to currently offer NCL v6.4.0 (released February 2017) and will also
> offer NCL v6.5.0 for download when it is released in the near future.
>
> I hope this helps!
> Kevin
>
> On Feb 16, 2018, at 3:36 PM, Dave Burns via ncl-install <
> ncl-install at ucar.edu> wrote:
>
> Hello.
> Executing ncl on a newly installed ubuntu box and an old ncl file that
> used to work generates this error:
> >fatal:Could not open ($NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl)
> >fatal:error at line 2 in file proj1.ncl
>
> That's odd, because NCARG_ROOT is defined and that file is openable and
> has permissive permissions for all users:
> >user at host:~/Downloads/1200/0214$ echo $NCARG_ROOT
> /usr
> >user at host:~/Downloads/1200/0214$ ls -la $NCARG_ROOT/lib/ncarg/
> nclscripts/csm/gsn_code.ncl
> -rwxr-xr-x 1 root root 490093 Jan 28  2016 /usr/lib/ncarg/nclscripts/csm/
> gsn_code.ncl
> >user at host:~/Downloads/1200/0214$ head  $NCARG_ROOT/lib/ncarg/
> nclscripts/csm/gsn_code.ncl
> ;
> ;      $Id: gsn_code.ncl,v 1.238.4.3 2010-05-06 17:13:26 haley Exp $
> ;;;;;
>
> So I am confused. The only way "could not open" would make sense was if
> ncl was opening the file for write access, which still doesn't make sense.
>
>
> Here are the first lines from the ncl file:
>
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"      ; These
> four libraries are automatically
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"       ; loaded
> from NCL V6.4.0 onward.
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"   ; No need
> for user to explicitly load.
>
>
> How do I fix this?
> thanks,
> Dave
>
>
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