[OHM] tagging unit movements

[Richard Welty]

On 4/15/13 9:27 AM, Rob Warren wrote:
> Richard,
>
> The way I see it, we have two solutions:
>
> a) Abuse the GPS trace storage of the base OSM database to store the 
> movements and modify the  renderers to read them.
> b) Implement movement through the use of multiple ways / relations, 
> one for each time stamped movement.
>
> I'm tempted to use b) for troops movements and b) for "born digital" 
> material like AIS / GPS / radar tracks.
>
> Are you planning to encode units as 'fronts' or as point data with 
> nato-style unit icons?
i'm thinking b as well.

i was planning to use nodes where the deployment was 
unavailable/uninteresting
(e.g., a company marching down a road), but ways where the information 
is interesting
(e.g., which way a unit was facing in combat, and whether the unit was 
in line or
column at the time, or perhaps the path of a march or retreat.)

there are potentially two scenarios for using relations:

1) showing movement of a given unit over time
2) showing groupings of units into higher level units

richard