pub fn fgl() -> Result<DataFrame, PolarsError>Expand description
§Measurements of Forensic Glass Fragments
§Description:
The ‘fgl’ data frame has 214 rows and 10 columns. It was collected by B. German on fragments of glass collected in forensic work.
§Usage:
fgl
§Format:
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.