step0: download this repository into local folder then replace the "add = '//Users/yayu/Documents/example_data/" in EOF_example.ipynb to your local directory
step 1: open terminal and type matlab, run step0_create to generate some example dataset
step2: exit matlab and run ./make_grid.com to convert .xyz file to .grd file
step 3: open jupyter notebook and run EOF_example.ipynb step by step
reference: https://atmos.washington.edu/~dennis/552_Notes_4.pdf