Here is how I am layering the City of London map, which I am creating using Adobe Illustrator and the MapStudio plugin. I’m basing the features/colours on the ISSOM2007 spec, as much as possible.
Layers
| Layer | Main Colours | Features |
|---|---|---|
| O-Courses | Purple, Brown | Courses, Corrections, Northing Lines |
| Tunnel Walls | Black Dots, Brown | Showing runnable routes below main level. May use thick brown lines to show tunnel entry points. |
| Point Features | Black, Green | Statues, Fountains, Ornamental Pillars, Lifts*, Stairwells, Distinctive Trees |
| Buildings | Dark Grey, Black | Buildings |
| Construction | Black, White | Construction Sites and Hoardings |
| Barriers | Black, Dark Green | Uncrossable Barriers (Walls, Gates and Railings), Crossable Fences, Hedges, Historic Stone Walls |
| Low Walls | Light Grey | Crossable Walls |
| Out of Bounds Land | Olive Green | Permanent Out-of-Bounds Open Areas |
| Water | Blue | Lakes, Rivers, Water |
| Steps | Dark Grey | Staircases, Steps |
| Underpasses | Light Grey | Underpasses, Building Canopies |
| Vegetation | Dark Green, Light Green, White | Flowerbeds (OOB), Woods |
| Open Land | Yellow | Accessible grassy areas |
| Pavement | 10% Brown | Pavements, Pavement-level Roads (May be revised to simply be thin lines show significant paved areas separated from the road.) |
| Road | 20% Brown | Roads (Colour may be changed to match the Pavement colour, to aid clarity) |
Line widths
| Linear Feature | Width |
|---|---|
| Steps, pavement edges, underpass boundaries | 0.07mm |
| Out-of-bounds (OOB) boundaries**, crossable fences, building boundaries, prominent boundaries within OOB areas | 0.14mm |
| Underpass dots (dot diameter) | 0.2mm |
| Crossable walls, uncrossable*** barriers (fences/walls), stairwell sides and separators, construction site boundaries | 0.35mm |
*These will probably be removed from the map in a later revision. You can’t really use one competitively!
**In some cases, no line is used (e.g. driveway) or the wall-line is used (obvious wall blocking use of OOB area as a run-thru.)
***Crossable underneath the barrier if dotted lines indicate a passageway underneath the main running level.