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<div class="moz-cite-prefix">On 17/02/2015 05:42 μμ, Peter wrote:<br>
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<blockquote cite="mid:54E3617C.4010907@gmx.de" type="cite">
<pre wrap="">Or would 'backward' search also be necessary as a user could go far off
the route?</pre>
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<br>
Peter has a valid point here.<br>
In a turn-by-turn navigation many issues can arise (speaking by
experience).<br>
<br>
When we're referring on distance from instruction, we actually mean
radius, as distance from a point is a circle geometry.<br>
We're facing the next instruction or not (i.e. we're near but we
turned the bike back).<br>
And of course there is the issue of getting off route (fixed
distance) and when we get back, where we are and what direction we
have projected on the route.<br>
<br>
<div class="moz-signature">-- <br>
<font color="#000000">Emux</font><br>
<a href="http://wiki.openstreetmap.org/wiki/Cruiser">Cruiser</a> -
<a
href="http://wiki.openstreetmap.org/wiki/Atlas_%28navigation_application%29">Atlas</a></div>
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