observations.crabs
crabs(path)Load the Crabs data set (Campbell & Mahon, 1974). It contains 200 rows and 8 columns, describing 5 morphological measurements on 50 crabs each of two colour forms and both sexes, of the species Leptograpsus variegatus collected at Fremantle, W. Australia.
The data contains the following columns:
| Feature | Description |
|---|---|
| sp | species; 0 for blue, 1 for orange |
| sex | 0 for male, 1 for female |
| index | index 1:50 within each of the four groups |
| FL | frontal lobe size (mm) |
| RW | rear width (mm) |
| CL | carapace length (mm) |
| CW | carapace width (mm) |
| BD | body depth (mm) |
Args:
path: str. Path to directory which either stores file or otherwise file will be downloaded and extracted there. Filename iscrabs.csv.
Returns:
Tuple of np.darray x_train with 200 rows and 8 columns and dictionary metadata of column headers (feature names).
Campbell, N., & Mahon, R. (1974). A multivariate study of variation in two species of rock crab of the genus leptograpsus. Australian Journal of Zoology, 22(3), 417–425.