The data in lizard.dat are from McCullagh and Nelder (1989) and concern the daytime habits of two species of lizard, grahami and opalinus. They were collected by observing occupied sites or perches and recording the appropriate description, namely species involved, time of day, height and diameter of perch and whether the site was sunny or shaded.
Column | Type | Description |
1 | binary | indicator for the height of the perch (in feet):
0 if ![]() ![]() |
2 | binary | indicator for the diameter of the perch (in inch):
0 if ![]() ![]() |
3 | binary | indicator whether the site was sunny or shaded:
0 if sun, 1 if shade |
4 | categorical | indicator for the time of day:
1 if early, 2 if midday, 3 if late |
5 | metric | number of grahami observed |
6 | metric | total number of lizards observed |