<div class="gmail_extra"><div class="gmail_quote">2012/4/27 Richard Weait <span dir="ltr"><<a href="mailto:richard@weait.com" target="_blank">richard@weait.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="HOEnZb"><div class="h5">Two things come to mind for me.</div></div>
<br>
First, the distance calculation does not require OSM. If you<br>
generalize 20 blocks or whatever as n-meters you can calculate<br>
crow-flies distance with only the lat-lons. Of course, if your want<br>
to route over roads (pedestrian paths) and calculate that distance,<br>
having the OSM data is really helpful.<br></blockquote><div><br></div><div>Thanks for your input, Richard!</div><div><br></div><div>To be honest this is the first time I dive into implementing the "near by" feature.</div>
<div>Does it have any other name apart from "near by" ? I couldn't find much related to OSM</div><div>in this topic, but maybe because my search was a bit narrow.</div><div> </div><div>I'm not sure if I'll implement pedestrian paths, it depends on how complex/possible it is</div>
<div>to do it on a mobile device. For the moment I just have the tiles for the area I need</div><div>(Buenos Aires Capital) and draw some markers using vectors from the OpenLayers mobile lib.</div><div><br></div><div>Are there other ways other than generalizing on n-meters around the point where the user is?</div>
<div>What are crow files?</div><div><br></div><div>Sorry for my ignorance, if you can point me to some docs on this topic I will avoid doing basic questions :)</div><div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Second, if the phone has a list of POIs, I wonder if some of them<br>
should also be in the OpenStreetMap data base? Are these<br>
generally-interesting POIs or POIs that should not be included in OSM?<br></blockquote><div><br></div><div>The POIs are loaded by us. Not sure if these are called POIs as well, as I'm guessing a POI</div><div>is a somewhat well-known and pre-defined location on the map.</div>
<div>In our case, the 'POIs' are determined by us, and very likely they are not part of OSM,</div><div>as they are mainly restaurants and hotels which have an agreement with us to appear on the app.</div><div><br>
</div><div>To simplify (without thinking of pedestrian paths) do you think there's a way I can show our custom POIs</div><div>near by the user's current location?</div><div><br></div><div>Thanks a lot!</div><div>Rama</div>
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