<div class="gmail_quote">On Mon, Nov 12, 2012 at 2:21 PM, sly (sylvain letuffe) <span dir="ltr"><<a href="mailto:liste@letuffe.org" target="_blank">liste@letuffe.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On lundi 12 novembre 2012, ciprian niculescu wrote:<br>
> Hello,<br>
<br>
Hi,<br></blockquote><div>Hi,<br> <br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im"><br>
> I'm wondering why it don't exist the possibility to have minutely updates<br>
> (or hourly) for a country?<br>
<br>
</div>Short answer : because no one bothered to provide that for all countries.<br></blockquote><div>:) uuu not good<br> <br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Medium size answer : It does exists for some areas as christian pointed to.<br>
And a process exists to generate those, still, what is missing is someone to<br>
run it on a (several) server(s) and provide minutely diffs extracts.<br></blockquote><div>nice, and the procedure is? :)<br> <br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Longer answer : The motivation might be low to provide such a service, low to<br>
keep pushing forward that way of doing because it isn't really flexible (You<br>
might need country X, but someone else will need country Y and some other<br></blockquote><div>i see, so it don't scale up, it works if you want a particular area<br> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
will need an arbitrary area) while there are other ways to achieve the same<br>
result, for example using<br>
<a href="http://wiki.openstreetmap.org/wiki/Overpass_API/Augmented_Diffs" target="_blank">http://wiki.openstreetmap.org/wiki/Overpass_API/Augmented_Diffs</a><br>
to split diffs at consumer side.<br>
Tought, there isn't (AFAIK) tools to handle that now.<br></blockquote><div><br>i've fast read the page and look good, i'll read all the parts, and put my questions after.<br> <br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">
> I don't know what implies to make it. As far as i understand OSM to<br>
> host/distribute hourly diff for country, it's something like:<br>
> - do a minutely/hourly updates for the planet => result the planet.osm<br>
> - do a split of the planet.osm on the polygons of the country<br>
> - do a diff between the old-osm-contry and the new one => results the<br>
> hourlly diff for the country<br>
><br>
> Is this process wright?<br>
</div>That's one possible workflow for such a process (working directly on<br>
planet.osm files however won't go anywhere due to time needed to process the<br>
planet file IMHO, but storing it into some more indexed format, why not)<br></blockquote><div><br>yes and/or doing some pre-filtering of things that are not needed/intended for the end use.<br>Let me explain: For editing the OSM map, doing it directly in the main DB is ok, beacouse the rendering of main slippy map is updated in minutes, but what if i update others data (in my case the public transport), i want to see the changes fast, not after 24h.<br>
For one zone i see the way, but i wanted to do it as global as possible as maybe others need this type of service.<br> <br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
The other workflow would be to rely on special diffs (like Augmented_Diffs)<br>
and split those diffs according to your needs.<br>
The generation of planet Augmented Diffs beeing dedicated to some servers<br>
while consumers splits at client side. </blockquote><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<span class="HOEnZb"><font color="#888888"><br>
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<br>
--<br>
sly<br>
qui suis-je : <a href="http://sly.letuffe.org" target="_blank">http://sly.letuffe.org</a><br>
email perso : sylvain chez letuffe un point org<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
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