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When writing a NCL script, some high level graphics and contributed scripts often need to be loaded first. So, the head of a script looks like this:

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"

With "NCL-import", you can write cleaner code:

import((/"gsn_csm", "contributed"/))

The license for NCL-import is GPLv3.


  1. Set NCL_DEF_SCRIPTS_DIR environment variable
  2. Put ncl_import.ncl in NCL_DEF_SCRIPTS_DIR


NCL scripts in scripts/ directory are functions I use to make writing NCL code easier and faster. To use one of these scripts, just import it. Well, I will write documentation for these scripts later.

Known Issues

  1. Scripts with dependencies should be imported one by one in order, e.g., "gsn_csm" depends on "gsn_code".
  2. NCL (6.0 and 6.1) for Mac might have arbitrary errors or quit unexpectedly sometimes with custom scripts