Figure 1
An extract from Roman Republican Coin Hoards (Table XI) showing part of the arrangement of coinage issues by Michael Crawford. Reprinted with permission of the Royal Numismatic Society.
Figure 2
A simplified flow diagram showing the sequence used in the simulation. Of the inputs shown on the left, only the number of hoards required is compulsory. The remainder have default values which can be over-ridden if desired and are shown on the right.
Figure 3
Results of the simulations with 10 hoards.
Figure 4
Results of the simulations with 20 hoards.
Figure 5
Results of the simulations with 50 hoards.
Table 1
Details of the hoards in data set Kevin.
| HOARD | CLOSING DATE | TOTAL | TOTAL EXCL. YEAR ZERO |
|---|---|---|---|
| H01 | 12 | 68 | 53 |
| H02 | 14 | 33 | 23 |
| H03 | 15 | 84 | 66 |
| H04 | 15 | 895 | 730 |
| H05 | 16 | 42 | 36 |
| H06 | 16 | 650 | 521 |
| H07 | 16 | 387 | 309 |
| H08 | 17 | 201 | 165 |
| H09 | 18 | 191 | 155 |
| H10 | 20 | 37 | 33 |
| H11 | 20 | 126 | 112 |
| H12 | 21 | 1069 | 911 |
| H13 | 22 | 225 | 193 |
| H14 | 23 | 239 | 202 |
| H15 | 24 | 145 | 126 |
| H16 | 25 | 76 | 64 |
| H17 | 27 | 245 | 216 |
| H18 | 28 | 148 | 138 |
| H19 | 28 | 77 | 65 |
| H20 | 29 | 744 | 666 |
| Totals | 5682 | 4784 |
Figure 6
The original data in hoard Kevin as a Bertin plot.
Figure 7
The data in hoard Kevin as a Bertin plot after seriation using CA.
Figure 8
Ordination maps from CA of data set Kevin.
Figure 9
The data in hoard Kevin as a Bertin plot after seriation using the PCA angle method on standardised data.
Figure 10
The data in hoard Kevin as a Bertin plot after seriation using the BEA TSP method on chord transformed data.
Figure 11
Principal curves through the issues from the CA of data set Kevin.
Figure 12
Symmetric maps from CA of data set Lyn. Filled circles are hoards, open circles are issues.
Figure 13
Ordination maps from the bootstrapped CA of hoards from Italy and Spain at the end of the second century bc. Ellipses are 95% confidence regions derived from the bootstrapping.
Figure 14
The circles plot score for each coin issue on the first axis of inertia from a CA. The lines represent approximately 95% of the values from the bootstrapped replicates calculated from the reported variances. The issue numbers are those from Crawford (1974). The vertical dashed line shows the upper bound for issue RRC 302.