<div dir="ltr"><div><div><div>Rails code always welcome!<br><br></div>For now use what is available is documented here <a href="http://wiki.openstreetmap.org/wiki/OHM/Dev">http://wiki.openstreetmap.org/wiki/OHM/Dev</a> (basically a LUA script for osm2pgsql and demonstration of how to build static tiles for a restricted data range with the Burning Man 2008, 2009 as demo examples).<br><br></div>The whole area is non-trivial in an OSM sense, let alone retrofitting it in Rails, editors etc. <br><br>We usually refer to it as the time-slider because some kind of means to select a time range is it is needed in renders, old raster maps, OHM data and editing.<br><br></div>Jerry<br></div><div class="gmail_extra"><br><div class="gmail_quote">On 9 January 2015 at 18:17, Lester Caine <span dir="ltr"><<a href="mailto:lester@lsces.co.uk" target="_blank">lester@lsces.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 09/01/15 17:59, Richard Welty wrote:<br>
><br>
> however, this leads to the reason i asked about a query API.<br>
> Sometimes historic racing circuits overlap with other circuits,<br>
> both historic and current. this leads to a confusing map where<br>
> both types of circuit are rendered in the same manner.<br>
<br>
This is the very point I've been making for a lo7g time. A large section<br>
of historic material still exists today, so there has to be some<br>
parallel process with the current data set to manage places where a<br>
section of historic data has been rejuvenate or re-developed, and some<br>
of the key data is still live in the current database. There has to be<br>
some part of the API that supports start_date and end_date so that data<br>
can be windowed correctly.<br>
<br>
--<br>
Lester Caine - G8HFL<br>
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</blockquote></div><br></div>