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NCL is an interpreted language designed specifically for scientific data analysis and visualization. Supports netCDF3/4, GRIB1/2, HDF-SDS, HDF4-EOS, binary, shapefiles and ascii files.


Built from several licences, see [1] for details. Freely available on MetaCentrum machines.


Upcoming modulesystem change alert!

Due to large number of applications and their versions it is not practical to keep them explicitly listed at our wiki pages. Therefore an upgrade of modulefiles is underway. A feature of this upgrade will be the existence of default module for every application. This default choice does not need version number and it will load some (usually latest) version.

You can test the new version now by adding a line

source /cvmfs/

to your script before loading a module. Then, you can list all versions of ncl and load default version of ncl as

module avail ncl/ # list available modules
module load ncl   # load (default) module

If you wish to keep up to the current system, it is still possible. Simply list all modules by

module avail ncl

and choose explicit version you want to use. After initialization are correctly set up the following system variables: