[OHM] Representing the Change in Tag Values over Time

[Tommy Bruce]

Why not put the date on the right side of the equal sign before the tag?


2017-04-03 15:47 GMT-05:00 Richard Welty <rwelty at averillpark.net>:

> On 4/3/17 4:45 PM, PauLL170 . wrote:
> > Hi JDruhanC,
> >
> > see: http://wiki.openstreetmap.org/wiki/Proposed_features/Date_namespace
> .
> >
> > For example:
> > highway=track
> > highway:1900--1950-07=path
> > highway:1950-07--1985=track
> > start_date=1900
> > end_date=1985
> >
> > It gets complicated (according to rendering a certain date) when the
> > dates of "path" and "track" overlap due to unknowingness etc. - how do
> > we render that? But in general I think this is a legit method.
> i've never liked strategies like this that pollute key space (the left side
> of the = signs). it can make search strategies really, really expensive.
>
> richard
>
> --
> rwelty at averillpark.net
>  Averill Park Networking - GIS & IT Consulting
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