Measurements of Forensic Glass Fragments
SUMMARY:
The
fgl
data frame has 214 rows and 10 columns.
It was collected by B. German on fragments of glass
collected in forensic work.
DATA DESCRIPTION:
This data frame contains the following columns:
ARGUMENTS:
- RI
-
refractive index; more precisely the refractive index is 1.518xxxx.
The remaining 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).