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			<title>Bikely - Elevation guide</title>
			<lastBuildDate>Tue, 24 Nov 2009 22:19:39 +0000</lastBuildDate>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=221#Comment_221</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=221#Comment_221</guid>
		<pubDate>Wed, 19 Jul 2006 11:24:31 +0000</pubDate>
		<author>elee</author>
		<description>
			<![CDATA[Any chance of adding elevation changes and % grade to routes?]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=222#Comment_222</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=222#Comment_222</guid>
		<pubDate>Wed, 19 Jul 2006 12:04:46 +0000</pubDate>
		<author>Jules</author>
		<description>
			<![CDATA[Hopefully - it's on my todo list.<br /><br /><a href='http://www.bikely.com/forum/discussion/7/elevations/'>See this</a>, also]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=342#Comment_342</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=342#Comment_342</guid>
		<pubDate>Fri, 18 Aug 2006 11:40:34 +0000</pubDate>
		<author>stayrose</author>
		<description>
			<![CDATA[Bike4fun:<br /><br />What is the elevation for your ride?]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=345#Comment_345</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=345#Comment_345</guid>
		<pubDate>Sat, 19 Aug 2006 12:10:54 +0000</pubDate>
		<author>davidjschloss</author>
		<description>
			<![CDATA[I was just looking at Routeslip, and they've got elevation data. It's a killer function, I hope it's still on your todo list? I'd really really like to see this one added.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=351#Comment_351</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=351#Comment_351</guid>
		<pubDate>Tue, 22 Aug 2006 10:12:45 +0000</pubDate>
		<author>skil</author>
		<description>
			<![CDATA[My dream bikely would allow you the option to turn on and off layers, such as with Vancouver's vanmap:<br /><br />http://www.city.vancouver.bc.ca/vanmap/<br /><br />What I'd especially like to see is a map that shows:<br />- CONTOUR LINES and TRAFFIC LIGHTS &amp; STOP SIGNS]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=352#Comment_352</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=352#Comment_352</guid>
		<pubDate>Wed, 23 Aug 2006 08:29:25 +0000</pubDate>
		<author>Jules</author>
		<description>
			<![CDATA[I'm working on the elevation graph today ;-)<br /><br />The data source is a bit flakey, though, so we'll see how it goes.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=360#Comment_360</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=360#Comment_360</guid>
		<pubDate>Wed, 23 Aug 2006 15:31:17 +0000</pubDate>
		<author>mmeiser</author>
		<description>
			<![CDATA[topographic data... something gmaps is really, really missing. I've seen some cool hacks and remixes to combine topographic data... but best to wait untill google gets it.<br /><br />Sadly... I too would LOVE topographic maps.<br /><br />Like the layers thing too... but admitedly it's not core functionality... it's the cool sort of added value stuff you can add later.<br /><br />I just wish I lived somewhere where I could say... yeah, that elevation graph is awesome... but there's no flatter place in the world. :P<br /><br />-Mike]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=365#Comment_365</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=365#Comment_365</guid>
		<pubDate>Thu, 24 Aug 2006 20:31:28 +0000</pubDate>
		<author>Jules</author>
		<description>
			<![CDATA[As we speak, the backlog of 3500 routes (comprising nearly half a million geo-points) are being scarfed down from USGS's servers ;-)<br /><br />You're gonna love the elevation graphs.. stay tuned for deployment late this week!]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=401#Comment_401</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=401#Comment_401</guid>
		<pubDate>Tue, 29 Aug 2006 00:41:32 +0000</pubDate>
		<author>sfpinkfloyd</author>
		<description>
			<![CDATA[Is there a way to look at elevation graphs in feet?  I just see them in meters even though I've changed the map to miles.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=416#Comment_416</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=416#Comment_416</guid>
		<pubDate>Tue, 29 Aug 2006 07:17:29 +0000</pubDate>
		<author>stephanosbacon</author>
		<description>
			<![CDATA[A lot of my routes are loops but when looking at the elevation graphs, the start and end elevations don't match.  Am I missing something?]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=417#Comment_417</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=417#Comment_417</guid>
		<pubDate>Tue, 29 Aug 2006 07:41:37 +0000</pubDate>
		<author>brandonwilhite</author>
		<description>
			<![CDATA[Same here on the loop elevations just keep going up and up. Doesn't seem right.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=436#Comment_436</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=436#Comment_436</guid>
		<pubDate>Tue, 29 Aug 2006 16:35:37 +0000</pubDate>
		<author>wia</author>
		<description>
			<![CDATA[Same here. The &quot;Naustadt&quot;-route I added yesterday (in Saxony, Germany) is a loop but fails to end at the starting elevation. To me it looks like as if only half of the route is plotted, i.e. from start to km 26 or so. That would make sense.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=443#Comment_443</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=443#Comment_443</guid>
		<pubDate>Wed, 30 Aug 2006 08:08:48 +0000</pubDate>
		<author>eheupel</author>
		<description>
			<![CDATA[Will the elevation data be updated into the gpx files?<br />This would be an idel development for me, wanting to use some of my courses to train over winter for the course itself in the spring. I can dump a GPX file into Computrainer's course creation software, but without elevation field would have to duplicate the effort.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=445#Comment_445</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=445#Comment_445</guid>
		<pubDate>Wed, 30 Aug 2006 08:51:32 +0000</pubDate>
		<author>Jules</author>
		<description>
			<![CDATA[When I get some more time I'll examine this issue (and add elevation to the GPX export).]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=448#Comment_448</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=448#Comment_448</guid>
		<pubDate>Wed, 30 Aug 2006 13:21:17 +0000</pubDate>
		<author>andrewheard</author>
		<description>
			<![CDATA[Jules, fantastic site. Are the elevation graphs supposed to be working? I have two routes where the graph is nothing like reality. Check out Australia &gt; Tasmania &gt; Hobart : Longley to Hobart. The 21km mark is at sea level but the graph shows 368m. The other route Australia &gt; Tasmania &gt; Hobart : Around the channel, anticlockwise, Hobart, Cambridge is similarly badly wrong. At the 2km mark the elevation should rise quickly to 300+ metres but the graph is showing elevation dropping down for the 1st 15km which is completely wrong.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=449#Comment_449</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=449#Comment_449</guid>
		<pubDate>Wed, 30 Aug 2006 14:33:07 +0000</pubDate>
		<author>skil</author>
		<description>
			<![CDATA[Jules, this is all terrific.  Great job -- keep up the good work!]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=452#Comment_452</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=452#Comment_452</guid>
		<pubDate>Wed, 30 Aug 2006 18:16:39 +0000</pubDate>
		<author>graeme.chambers</author>
		<description>
			<![CDATA[Good work for getting the elevation data going! even if it might be a little dodgey :)<br /><br />Have you thought about adding two or more sets of elevation to the one graph?  eg: user is viewing a route, then selects a &quot;Nearby&quot; route, then clicks for elevation.  It'd be nice if you can compare the two routes.  It might be a bit of effort to get the two graphs to overlay at the correct points, but hey.. this is a wishlist]]>
		</description>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=456#Comment_456</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=456#Comment_456</guid>
		<pubDate>Thu, 31 Aug 2006 00:27:02 +0000</pubDate>
		<author>klucht</author>
		<description>
			<![CDATA[Yes... is there a way to look at elevation in feet?  Thanks, your site is outstanding btw.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=457#Comment_457</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=457#Comment_457</guid>
		<pubDate>Thu, 31 Aug 2006 00:50:15 +0000</pubDate>
		<author>jefflynch35</author>
		<description>
			<![CDATA[Amazing site!  New features are wonderful.  <br /><br />Elevation is an excellent feature!  Unfortunately, my loop rides don't seem to end up at the same elevation as they start.  hmmmm<br /><br />Other features? - total elevation gained (for comparison of ride difficulty), data in feet/miles.  Sorry, we still haven't caught up to the rest of the world yet!  Thanks]]>
		</description>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=505#Comment_505</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=505#Comment_505</guid>
		<pubDate>Mon, 04 Sep 2006 20:29:33 +0000</pubDate>
		<author>TimC</author>
		<description>
			<![CDATA[Is the data really poor resolution, and your interpolation goes bad?<br /><br />One of my routes (Coonabarabran to Siding Spring Observatory) seems roughly right from my memory (it's not hard to guess as to its correctness -- there's a big mountain at the end :), but my short distance commutes etc all seems really wrong by 50m or so at places.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=517#Comment_517</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=517#Comment_517</guid>
		<pubDate>Tue, 05 Sep 2006 08:13:03 +0000</pubDate>
		<author>Jules</author>
		<description>
			<![CDATA[It's Bikely's interpolation that causes the problems I think.  I'm going to re-write it soon.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=559#Comment_559</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=559#Comment_559</guid>
		<pubDate>Wed, 06 Sep 2006 23:01:35 +0000</pubDate>
		<author>cheg</author>
		<description>
			<![CDATA[The elevation function does not work for any of the routes I have entered. I have one where I transferred a GPS track that had over 5000' of elevation change over many hills and and the graph shows a steady climb of 50 meters. It is a loop but the elevation is 50 meters different at the ends. Other routes, not from GPS,  have NaN.00Mm on the vertical scale.  None of the 8 routes I have entered in the Seattle area have anything useful in the elevation grasph.]]>
		</description>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=564#Comment_564</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=564#Comment_564</guid>
		<pubDate>Thu, 07 Sep 2006 09:05:23 +0000</pubDate>
		<author>Jules</author>
		<description>
			<![CDATA[The other issue is that the <a href='http://gisdata.usgs.net/'>data source</a> is very flakey and often just returns '0'.  Nothing I can do about that unfortunately.<br /><br />Routes imported from GPX files may take up to 24 hours to retrieve their elevation data.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=566#Comment_566</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=566#Comment_566</guid>
		<pubDate>Thu, 07 Sep 2006 13:39:55 +0000</pubDate>
		<author>murray</author>
		<description>
			<![CDATA[This is a very useful site.  I've gained great benefit from the route planning capabilities.  Hope the combination of a rewrite and improved source data can do something about the elevation problems.  There are a number of routes I've added where the results are clearly nonsense - if I start and finish at the same horizontal co-ordinates, the elevation should be the same too.<br />Best of luck debugging.<br />Murray]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=570#Comment_570</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=570#Comment_570</guid>
		<pubDate>Fri, 08 Sep 2006 01:13:58 +0000</pubDate>
		<author>wia</author>
		<description>
			<![CDATA[For the &quot;Naustadt&quot; route I submitted I now created my own version of the elevation graph. I used the data which are available from NOAA. They are given on a 800x800 m^2 square grid, which is quite coarse. From this data I interpolated the elevations at the positions given in the gpx-file created by bikely. The result is not really accurate, but the overall picture is correct. You can find the image at http://leute.server.de/wilde/index.html. Maybe it helps to debug the bikely-elevation-function. If someone is interested in the small octave-script I wrote to make the plot, just tell me.]]>
		</description>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=668#Comment_668</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=668#Comment_668</guid>
		<pubDate>Thu, 21 Sep 2006 12:35:37 +0000</pubDate>
		<author>dbrower</author>
		<description>
			<![CDATA[Elevation in feet would be awfully nice.<br /><br />thanks!<br />-dB]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=742#Comment_742</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=742#Comment_742</guid>
		<pubDate>Tue, 03 Oct 2006 15:49:29 +0000</pubDate>
		<author>behanna</author>
		<description>
			<![CDATA[Cumulative elevation gain (i.e., total climbing) would also be nice.  If it's already there, then disregard.  Thanks for the site!]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=772#Comment_772</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=772#Comment_772</guid>
		<pubDate>Fri, 06 Oct 2006 09:27:25 +0000</pubDate>
		<author>Jules</author>
		<description>
			<![CDATA[Thanks for your feedback everyone (particularly wia), I believe the graphs are now much more accurate.  They also feature total climb + total descent figures and operate in both metric and imperial units.<br /><br />Take a look and let me know.]]>
		</description>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=776#Comment_776</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=776#Comment_776</guid>
		<pubDate>Sat, 07 Oct 2006 02:03:25 +0000</pubDate>
		<author>ThorArth</author>
		<description>
			<![CDATA[Jules<br /><br />I have had another look at elevation data for loop-type routes I entered previously - and it looks much more plausible now.  The total climb / descent data is also very welcome.  Your fix looks good!  Many thanks.]]>
		</description>
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	<item>
		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=780#Comment_780</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=780#Comment_780</guid>
		<pubDate>Sat, 07 Oct 2006 07:37:32 +0000</pubDate>
		<author>hellers</author>
		<description>
			<![CDATA[total climb rocks; thanks]]>
		</description>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=786#Comment_786</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=786#Comment_786</guid>
		<pubDate>Sat, 07 Oct 2006 21:32:53 +0000</pubDate>
		<author>wia</author>
		<description>
			<![CDATA[Jules<br /><br />the elevation graph for the naustadt route looks very well now (better than the version put on web). For one of Moritzburg routes (the longer one) I get two -9 m elevation points which is obviously wrong, but you wrote before, that this is in the data you get. Besides that the elevation data are realy cool. Thanks!!]]>
		</description>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=793#Comment_793</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=793#Comment_793</guid>
		<pubDate>Sun, 08 Oct 2006 20:12:39 +0000</pubDate>
		<author>hellers</author>
		<description>
			<![CDATA[When it works, the elevation guide is great, but it's still flakey. I excitedly entered a route yesterday with closely spaced points to see the total climb, but the effort didn't yield results:<br /><br />  http://www.bikely.com/maps/bike-path/7089<br /><br />:-(]]>
		</description>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=803#Comment_803</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=803#Comment_803</guid>
		<pubDate>Mon, 09 Oct 2006 09:39:49 +0000</pubDate>
		<author>Jules</author>
		<description>
			<![CDATA[The data source indeed remains very flakey.  Nothing we can do but cross our fingers and wait I'm afraid ;-(<br /><br />Check back in around 12 hours, I've marked that route to re-fetch the elevation data.]]>
		</description>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=805#Comment_805</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=805#Comment_805</guid>
		<pubDate>Mon, 09 Oct 2006 11:39:58 +0000</pubDate>
		<author>dtra</author>
		<description>
			<![CDATA[hey, great work on the site<br />it's really useful and fun<br /><br />you've prolly already had this suggestion<br />but a way to compare/map points on the elevation graph with points on the map would be awesome<br />as well as displaying comments for those points on the elevation graph (and better distance display on the elevation graph, eg. perhaps onmouseover a line appears that follows the mouse and displays the distance from the start, and also shows the exact height when it reaches a peak or trough)<br />obviously grade would be awesome, but not vital<br /><br />also, what i've noticed, is that if you add some extra points in, and move them a bit, it can put some more detailed elevations in<br /><br />just some suggestions<br />keep up the great work mate<br /><br />dave]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=811#Comment_811</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=811#Comment_811</guid>
		<pubDate>Mon, 09 Oct 2006 18:23:32 +0000</pubDate>
		<author>pilfjd</author>
		<description>
			<![CDATA[Thanks for the great site.  I agree with everyone, it's a very useful and fun site.<br /><br />Just a couple of questions:<br /><br />1) I'm just wondering why some elevation graphs of mine contain mile markers along the x-axis of the graph and some do not.<br />2) Also, how often will a route refresh it's elevation profile?  One of my current routes seems to have just 1 elevation data point that is invalid.  And, a couple of my routes from yesterday (more than 12 hours ago) still had no elevation data.  I deleted and recreated it and the elevation data was present.  Was the route going to get it's elevation data soon and I was just too impatient?<br /><br />Regards]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=812#Comment_812</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=812#Comment_812</guid>
		<pubDate>Mon, 09 Oct 2006 21:19:49 +0000</pubDate>
		<author>Jules</author>
		<description>
			<![CDATA[1 - The graph library appears to be a bit buggy and doesn't print x-axis lables for graphs with more than ~250 points in them.<br /><br />2 - It doesn't refresh unless all the points failed, or if I flag it to refresh.  I will at some point add a facility to "re-request" all the elevation data, but for the moment that's not available.  <br /><br />Moving a point will cause its elevation to be refreshed, so if you can guess which point is missing, then you can take that approach.  But I admit it's not particularly viable.<br /><br />Hopefully USGS will improve the reliability of their elevation service so that it at least notifies the consumer when it cannot fulfill the request - rather than just returning 0 as it does now!]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=819#Comment_819</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=819#Comment_819</guid>
		<pubDate>Wed, 11 Oct 2006 07:39:53 +0000</pubDate>
		<author>pilfjd</author>
		<description>
			<![CDATA[Jules, thanks for the quick responses.  Again, the site is great enough as it is, and I definitely understand that you are relying on an unreliable datasource for the elevation data.  This site is by far the best out of the other &quot;route creation&quot; Google Map mashups I've used for creating routes.  I definitely love the community feel about it.  Much thanks, again.<br /><br />Regards,<br />Jay]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=820#Comment_820</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=820#Comment_820</guid>
		<pubDate>Wed, 11 Oct 2006 09:23:10 +0000</pubDate>
		<author>dheatley</author>
		<description>
			<![CDATA[I plotted some routes Bright Boot Camp - Stage 4, Bright Boot Camp - Stage 3, Stage 1, and BBC - Stage 2 on Saturday.  I noticed that some of the data is populated on some of the routes when I created them where as others just don't have any data. There are big gaps in the data thouhg. They all have not had their Elevation updated since I created them.   Is this normal? Will I have to wait longer?]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=822#Comment_822</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=822#Comment_822</guid>
		<pubDate>Wed, 11 Oct 2006 09:51:16 +0000</pubDate>
		<author>Jules</author>
		<description>
			<![CDATA[dheatley - I think my previous post in this thread answers your questions.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=850#Comment_850</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=850#Comment_850</guid>
		<pubDate>Mon, 16 Oct 2006 18:55:26 +0000</pubDate>
		<author>TimC</author>
		<description>
			<![CDATA[Hey Jules -- commulative climbing -- I assume there is no filtering of bad points in that?<br /><br />http://www.bikely.com/maps/bike-path/Coonabarabran-to-Siding-Spring-Observatory had one obvious bad point, which would really stuff up cummulative climb/descent, if not filtered out.<br /><br />So my thought is -- is the bad data exactly 0 (someone mentioned -9m before)?  Sure, you can't filter that out directly, because for all you know, someone from the Netherlands will come along with their route at or below sea level, and they won't be given elevation data if filtered as such.  But what you can do is to filter out data that is both exactly 0, and has a large change from a previous or next point (and do this recursively in the case of multiple potentially bad data).  A large change can be defined as say 200m in 1km.  If my points are 100m apart, and one is exactly 0m, and one is greater than 20m elevation, then the 0 is filtered out.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=851#Comment_851</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=851#Comment_851</guid>
		<pubDate>Mon, 16 Oct 2006 18:58:12 +0000</pubDate>
		<author>TimC</author>
		<description>
			<![CDATA[And second -- what about a zoom function in the elevation graph?  Over 29km, my route doens't look very &quot;bumpy&quot;.  But in real life, there's plenty of undulations that you just can't see because of my screen resolution.  Let me define a zoom box (both X and Y dimensions independantly), and it will be clearer.  Then, as a bonus, the horizontal direction has a chance of having less than 256points (I'm guessing?) and we'll get an X axis display.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=852#Comment_852</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=852#Comment_852</guid>
		<pubDate>Mon, 16 Oct 2006 20:28:31 +0000</pubDate>
		<author>Jules</author>
		<description>
			<![CDATA[It does attempt to re-request bad data (0's, yes) using exactly the algorithm you describe.  Sometimes it works, but apparently when USGS is down, it just keeps on returning 0's ;-)<br /><br />No filtering at render time, but yes I could use that same algorithm to try to filter out the bad data during rendering.<br /><br />I'm might try writing a friendly letter to USGS instead!]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=860#Comment_860</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=860#Comment_860</guid>
		<pubDate>Tue, 17 Oct 2006 21:34:28 +0000</pubDate>
		<author>hellers</author>
		<description>
			<![CDATA[I think zeros tend to come up more when I add a point to the graph with the add-before or add-after feature, ie, while editing the route, more than while initially entering it. The elevation data usually works after I take the added point and move it (at all) by dragging it with the mouse. As a wild guess, there may be different rounding of positioning data going on in the two situations, and USGS reacts differently.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=862#Comment_862</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=862#Comment_862</guid>
		<pubDate>Wed, 18 Oct 2006 00:23:53 +0000</pubDate>
		<author>jeremy</author>
		<description>
			<![CDATA[Here's a thought, if a route is being imported from GPX, how about generating the elevation profile from the GPS data if the user specifies that they are using a GPS with a barometric altimeter?  This is likely to be more accurate than sourcing it the current way, though if changes are made to the route then elevations at those locations will have to be sourced the same way as now.]]>
		</description>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=868#Comment_868</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=868#Comment_868</guid>
		<pubDate>Wed, 18 Oct 2006 09:14:05 +0000</pubDate>
		<author>Jules</author>
		<description>
			<![CDATA[Agreed Jeremy - that's on my todo list.<br /><br />Do most GPSs include altitude data?]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=884#Comment_884</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=884#Comment_884</guid>
		<pubDate>Fri, 20 Oct 2006 15:22:39 +0000</pubDate>
		<author>jeremy</author>
		<description>
			<![CDATA[I think they do, though without a barometric altimeter it isn't as accurate (30m vs 3m) and it's only available if the unit can lock onto at least four satellites.  I noticed that on Garmin's motionbased site they offer elevation data for track logs recorded from units without an altimeter but recommend that it not be used for track logs form units that do have an altimeter.<br /><br />The other thing that would be nice to get some info (i.e. figures) of actual grades along the way.  I'm not aware of any sites (or apps) that do this at the moment though it should be quite trivial provided you have the horizontal distance travelled and the vertical elevation gained or lost.  Not sure how you'd present the info though, maybe just mousing over various sections of the graph.  An even more trivial thing that could be done though is to show individual waypoints on the graph as well to help get an idea of where the steeper sections are.]]>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=927#Comment_927</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=927#Comment_927</guid>
		<pubDate>Thu, 26 Oct 2006 19:55:01 +0000</pubDate>
		<author>nkhnz</author>
		<description>
			<![CDATA[Could you maybe show the elevation info as part of the point when editing the map? I am finding that in Wellington, NZ, with all the roads/tracks on the sides of steep hills I am getting some weird results. The current solution seems to be to move the point a bit to get a better elevation, but this is slow if you have to move the point and then generate the elevation chart to check it.<br /><br />Also is it possible to show the points with notes on the elevation chart?<br /><br />cheers for the great site.]]>
		</description>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=937#Comment_937</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=937#Comment_937</guid>
		<pubDate>Fri, 27 Oct 2006 13:40:40 +0000</pubDate>
		<author>Jules</author>
		<description>
			<![CDATA[I do plan to include "elevation at current point" - it will be included in my next round of changes.<br /><br />The elevation chart is an approximation of most routes - it cannot display more than a few hundred points. So it's not really feasible to annotate it.]]>
		</description>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=938#Comment_938</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=938#Comment_938</guid>
		<pubDate>Fri, 27 Oct 2006 15:09:22 +0000</pubDate>
		<author>sean_clift</author>
		<description>
			<![CDATA[Hi Jules,<br /><br />Great site! I'm also finding elevation flakey, just tried to fix a route by moving all the bad points which was going well until I got to the last one, when a whole new batch went bad...<br /><br />Your refresh idea sounds like the go... and the friendly letter!<br /><br />Sean]]>
		</description>
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		<title>Elevation guide</title>
		<link>http://www.bikely.com/forum/discussion/60/?Focus=1268#Comment_1268</link>
		<guid isPermaLink="false">http://www.bikely.com/forum/discussion/60/?Focus=1268#Comment_1268</guid>
		<pubDate>Sat, 06 Jan 2007 01:59:02 +0000</pubDate>
		<author>dr2chase</author>
		<description>
			<![CDATA[Seems to me that a true zero elevation would be rare, and if you get one, you should just interpolate from neighbors.<br /><br />I will try moving points in my routes.<br /><br />David]]>
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