No such ssh_data.nc file found in the eddyscan directory

[ZhiminB]

Quote from readme:
Below is an example for using scan_single.m (assuming current directory is eddyscan):
% Find all anticyclonic eddies
ssh_slice = ncread('ssh_data.nc', 'Grid_0001');
No such ssh_data.nc file found in the eddyscan directory.