MAKEFIGS_MATERN is the jMatern module of jLab.

 MAKEFIGS_MATERN  Makes all figures for Lilly et al. 2017.
  
    To use this script, you'll need to download the file materndata.zip
    from http://jmlilly.net/ftp/pub, unzip it, and put the files in it in a 
    directory that is on your Matlab search path.  
 
    Please note that some of these calculations are fairly intensive and
    may take a little while. 
    __________________________________________________________________
    This is part of JLAB --- type 'help jlab' for more information
    (C) 2017 J.M. Lilly --- type 'help jlab_license' for details