| destinations_york | Example destinations dataset: schools in York | 
| od_aus | Example OD dataset: flows between regions in Australia | 
| si_calculate | Calculate flow using a pre-existing function | 
| si_centroids | Example zones and centroids | 
| si_oa_wpz | Origin-Destination Data for Leeds | 
| si_oa_wpz_d | Destination Data for Leeds | 
| si_oa_wpz_o | Origin Data for Leeds | 
| si_od_census | Example OD dataset | 
| si_predict | Predict spatial interaction based on pre-trained model | 
| si_pubs | Example destinations dataset: pubs in Leeds | 
| si_to_od | Prepare OD data frame | 
| si_zones | Example zones and centroids | 
| zones_aus | Example zones dataset: regions of Australia | 
| zones_york | Example zones dataset: administrative zones of York |