[OHM] temporal queries in overpass

[Richard Welty]

it turns out that there is a proposal for broader
numerical comparison operators and the author of the
proposal is open to including time as something that
can be compared. i've suggested starting off simple,
allowing comparison of tags for which the value is a
simple ISO format date, such as start_date and end_date.
the dates would be parsed and normalized into an integer
value for comparison. the baseline for the date->integer
mapping is open for discussion but as it's a purely internal
value, it can be changed if it needs to be.

this seems like a way to get a useful capability quickly.

richard

-- 
rwelty at averillpark.net
 Averill Park Networking - GIS & IT Consulting
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