Table 1.
Visual Variables of the Cubic Glyph
| Visual Variable | Level | Type | Scale | Length | ||
| 1 | primary color | 1 | color | nom/ord | short | |
| 2 | height main cube | 2 | geometry size | ordinal | long | |
| 3 | color cap | 2 | color | nom/ord | short | |
| 4 | color base | 2 | color | nom/ord | short | |
| 5 | size cap | 2 | geometry shape | ordinal | medium | |
| 6 | height cap | 2 | geometry size | ordinal | long | |
| 7 | shape cap | 2 | geometry size | ordinal | short | |
| 8 | height west-element | 3 | geometry size | ordinal | long | |
| 9 | color west-element base | 3 | color | nom/ord | short | |
| 10 | color cap east-element | 3 | color | nom/ord | short | |
| 11 | height east -element | 3 | geometry size | ordinal | long | |
| 12 | color east -element base | 3 | color | nom/ord | short | |
| 13 | color cap east -element | 3 | color | nom/ord | short | |
| 14 | height south-element | 3 | geometry size | ordinal | long | |
| 15 | color south-element base | 3 | color | nom/ord | short | |
| 16 | color cap south-element | 3 | color | nom/ord | short | |