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		<title><![CDATA[Latest posts for the topic "Altitudes requests for _a lot_ of coordinates ?"]]></title>
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				<title>Altitudes requests for _a lot_ of coordinates ?</title>
				<description><![CDATA[ Hello,

I'm the author of the opensource <a href="http://www.knackes.com/blog/index.php?2008/11/20/193-gpx-editor-1070" target="_new" rel="nofollow">GPX Editor</a>. So far the program can use the GeoNames webservices to get the altitude of a waypoint but some user asked if it would be possible for an entire track.
My answer was that it would represent a big amount of web traffic (some tracks can have more than 10000 coordinates) and that it wouldn't be very kind to get all this load on what is essentially a free service.

Is there a solution ? A better way of querying data for a list of points ?
I would like to avoid to setup my own GeoNames mirror if possible, and of course keep all this free.]]></description>
				<guid isPermaLink="true">http://forum.geonames.org/gforum/posts/list/1202.page#5139</guid>
				<link>http://forum.geonames.org/gforum/posts/list/1202.page#5139</link>
				<pubDate><![CDATA[Wed, 7 Jan 2009 13:30:16]]> GMT</pubDate>
				<author><![CDATA[ pixelk]]></author>
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				<title>Re:Altitudes requests for _a lot_ of coordinates ?</title>
				<description><![CDATA[ Hi Pixelk

The text version of the SRTM3 service also accepts a list of lat/lng for the parameters 'lats' and 'lngs'. On the free server the number of points per call is limited to 20. 

Best

Marc]]></description>
				<guid isPermaLink="true">http://forum.geonames.org/gforum/posts/list/1202.page#5169</guid>
				<link>http://forum.geonames.org/gforum/posts/list/1202.page#5169</link>
				<pubDate><![CDATA[Sun, 11 Jan 2009 16:37:37]]> GMT</pubDate>
				<author><![CDATA[ marc]]></author>
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				<title>Re:Altitudes requests for _a lot_ of coordinates ?</title>
				<description><![CDATA[ Marc,
Could you explain what the format of the request is to recieve multiple altitudes.

I've tried
http://ws.geonames.org/srtm3?lat=50.01&lng=10.2&lat=51.01&lng=11.2
http://ws.geonames.org/srtm3?lat=50.01&lng=10.2&lat1=51.01&lng1=11.2
http://ws.geonames.org/srtm3?lat=50.01,51.01&lng=10.2,11.2

Unfortunately, I can't find any documentation on exactly HOW to do this.


]]></description>
				<guid isPermaLink="true">http://forum.geonames.org/gforum/posts/list/1202.page#6732</guid>
				<link>http://forum.geonames.org/gforum/posts/list/1202.page#6732</link>
				<pubDate><![CDATA[Mon, 23 Nov 2009 06:13:17]]> GMT</pubDate>
				<author><![CDATA[ jporra]]></author>
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				<title>Re:Altitudes requests for _a lot_ of coordinates ?</title>
				<description><![CDATA[ http://ws.geonames.org/srtm3?lats=50.01,51.01&lngs=10.2,11.2]]></description>
				<guid isPermaLink="true">http://forum.geonames.org/gforum/posts/list/1202.page#6733</guid>
				<link>http://forum.geonames.org/gforum/posts/list/1202.page#6733</link>
				<pubDate><![CDATA[Mon, 23 Nov 2009 06:24:11]]> GMT</pubDate>
				<author><![CDATA[ marc]]></author>
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