The fgl data frame has 214 rows and 11 columns. It was collected by B. German on fragments of glass collected in forensic work.
This data frame contains the following columns:
RI
refractive index; more precisely the refractive index is 1.518xxxx.
The next 8 measurements are percentages by weight of oxides.
Na
sodium.
Mg
manganese.
Al
aluminium.
Si
silicon.
K
potassium.
Ca
calcium.
Ba
barium.
Fe
iron.
type
The fragments were originally classed into seven types, one of which was absent in this dataset. The categories which occur are window float glass (WinF: 70), window non-float glass (WinNF: 76), vehicle window glass (Veh: 17), containers (Con: 13), tableware (Tabl: 9) and vehicle headlamps (Head: 29).
References
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.
Use the following R code to directly access this dataset in R.
