Re: [OSM-talk] Where Did You Edit
David Fawcett david.fawc...@gmail.com wrote: Have you looked at Open Heat Map? http://www.openheatmap.com/ and https://github.com/petewarden/openheatmap/wiki/ I've just tested heatmap within openlayers using heatmap script : http://www.leretourdelautruche.com/map/nuke/ http://www.leretourdelautruche.com/map/nuke/heatmap.js Easy, don't know how it can be with large data set,perhaps needs some preprocessing... -- Pierre-Alain Dorange OSM experiences : http://www.leretourdelautruche.com/map/ ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
On 04.08.2011 17:06, David Fawcett wrote: Have you looked at Open Heat Map? http://www.openheatmap.com/ and not too much in detail. It requires me to send the data to the server which sends bitmaps back to a flash client. I wanted to have the whole processing chain on my server as the data to be visualized gab get large. The TIGER import bots did apx. 170 million node edits each. And I have the data in a quite high resolution available because I'm planning a zoom functionality. Maybe my existing solution is not that bad... Stephan ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
Stephen, I had remembered a heat map project that I had seen several months ago. Open Heat Maps was similar, but not the exact one that I remembered. Check out Acid Maps, it is the one that I was thinking of: http://acidmaps.com/ You can use the library by itself or as a plugin for GeoServer. David. How about this: http://www.sethoscope.net/heatmap/ (Python on your server) In Perl: http://blog.imtrevor.com/2009/07/16/generating-heat-maps-using-perl/ On Fri, Aug 5, 2011 at 1:50 AM, Stephan Knauss o...@stephans-server.de wrote: On 04.08.2011 17:06, David Fawcett wrote: Have you looked at Open Heat Map? http://www.openheatmap.com/ and not too much in detail. It requires me to send the data to the server which sends bitmaps back to a flash client. I wanted to have the whole processing chain on my server as the data to be visualized gab get large. The TIGER import bots did apx. 170 million node edits each. And I have the data in a quite high resolution available because I'm planning a zoom functionality. Maybe my existing solution is not that bad... Stephan ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
Stephan Knauss wrote: And I have the data in a quite high resolution available because I'm planning a zoom functionality. So an initially scaling based on the data extents could be a useful next step? If you already have a higher resolution base. -- Lester Caine - G8HFL - Contact - http://lsces.co.uk/wiki/?page=contact L.S.Caine Electronic Services - http://lsces.co.uk EnquirySolve - http://enquirysolve.com/ Model Engineers Digital Workshop - http://medw.co.uk// Firebird - http://www.firebirdsql.org/index.php ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
Hi Ian, On 04.08.2011 05:37, Ian wrote: You may want to consider using Google's Fusion Tables for this. Their map view will generate heat maps out of millions of points quite quickly. I did google for ready-to-use heat maps for a while but the best thing I found was a commercial API. I guess some GIS-Software can create such heat maps as well. Have to say I was a bit shocked when you mentioned this as it took a while for me to get satisfying results with my own map generator. The difficult part is that I'm not interested in a single heat map but in a separate map for each user. My raw-date is way too big for the google limits of 250MB per account (100MB per table). http://www.google.com/support/fusiontables/bin/answer.py?hl=enanswer=171181 But anyway thanks for the hint, it might be useful for others or for different use cases. Stephan ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
On 04. 08. 11 05:37, Ian wrote: On Wednesday, August 3, 2011 9:49:18 PM UTC-5, Josh Doe wrote: On Wed, Aug 3, 2011 at 4:53 PM, Stephan Knauss o...@stephans-server.de wrote: What would be the coolest way to zoom? I thought of a slippy map with transparency above the regular tiles. Others mentioned presets like continent/country. I could also imagine to let you set an arbitrary bounding box based on a zoom level. eg you say you want to see zoom level 13 and then you get a bounding box that you can place over the area of interest. Coolest would definitely be transparent tiles, as it's the most versatile. You (or others) could then implement presets for countries/states, take advantage of OpenLayers shift+click+drag zoom functionality, etc. You may want to consider using Google's Fusion Tables for this. Their map view will generate heat maps out of millions of points quite quickly. Plus, you could easily add a selection to narrow the maps down by user. I don't think you need to display Fusion Tables tiles in their API, either. Technically it's easy to add to OpenLayers but their terms might say otherwise. What about OpenLayer clusters http://openlayers.org/dev/examples/strategy-cluster.html ? Yves ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
On 04.08.2011 06:43, Arun Ganesh wrote: Very handy tool! Can we have the username links on odbl.de http://odbl.de as well? You mean similar to what I did here? http://downloads.osm-tools.org/check-odbl-th/check-odbl-th-20110802.html Is quite easy to do, but must be done by the maintainer of that site (which is not mine). A possibly useful feature would be displaying edits for multiple users in one view as different layers with transparency. Common areas would show up darker. It's possible. But if you sum up all the edits you have a different kind of map. It would be a density map similar to what I created for a small region: http://forum.openstreetmap.org/viewtopic.php?id=13160 I'm certain I saw a full-planet density map somewhere. Guess it was joto's presentation of osmium as this was one example. Stephan ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
On 04.08.2011 08:58, yvecai wrote: What about OpenLayer clusters http://openlayers.org/dev/examples/strategy-cluster.html ? unfortunately not. OpenLayers clusters on client-side. This is fine for smaller data sets but not feasible when the amount of data grows. I had written some tech stuff about server-side clustering, if you are interested: http://toolserver.org/~stephankn/cuisine/clustering.html or http://wiki.openstreetmap.org/wiki/User:Stephankn/knowledgebase#grouping.2Fclustering_PostgreSQL_query_results For data like the 170 million edits of our top-user a client-side strategy will not work. Top editors: http://wdye.osm-tools.org/?DaveHansenTiger 171654402 node edits http://wdye.osm-tools.org/?woodpeck_fixbot 169659734 node edits http://wdye.osm-tools.org/?jumbanho 55282080 node edits Stephan ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
Stephan Knauss wrote: What would be the coolest way to zoom? While 'zoom' would be a nice to have, for many like myself, simply drawing the map with a boundary a little larger than the extents would be a useful next step, and a little easier to manage in the first instance? Then being able to zoom in further is probably secondary to many people at the moment? -- Lester Caine - G8HFL - Contact - http://lsces.co.uk/wiki/?page=contact L.S.Caine Electronic Services - http://lsces.co.uk EnquirySolve - http://enquirysolve.com/ Model Engineers Digital Workshop - http://medw.co.uk// Firebird - http://www.firebirdsql.org/index.php ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
Interesting site! Would agree that a zoom would be nice. Not sure where my edits in the eastern central USA, Taiwan and western Africa have come from (nickw), as I've not visited any of these places - I'm guessing these were from early experiments with the API back in the day. Nick -Stephan Knauss o...@stephans-server.de wrote: - To: OpenStreetMap talk mailing list talk@openstreetmap.org From: Stephan Knauss o...@stephans-server.de Date: 03/08/2011 09:07PM Subject: [OSM-talk] Where Did You Edit Hi, I presented this already on the talk-de mailing list, it could be interesting for others in the community as well. I have created a website that lets you see where you edited. According to the intensity of your edits a map is colored from dark red to bright green. For your convenience the site can be accessed using this direct URL: http://wdye.osm-tools.org/ Based on the feedback from the community I extended the site by the possibility to directly link to a specific username, e.g. Steve would use this link: http://wdye.osm-tools.org/?Steve or http://wdye.osm-tools.org/user/Steve The site provides links to directly link to the images. As long as my server can handle the load hot-linking is fine. If you expect the image being requested quite often consider storing it on your own server. Hope you like the idea, comments welcome. Stephan ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
Have you looked at Open Heat Map? http://www.openheatmap.com/ and https://github.com/petewarden/openheatmap/wiki/ On Wed, Aug 3, 2011 at 10:37 PM, Ian ian.d...@gmail.com wrote: On Wednesday, August 3, 2011 9:49:18 PM UTC-5, Josh Doe wrote: On Wed, Aug 3, 2011 at 4:53 PM, Stephan Knauss o...@stephans-server.de wrote: What would be the coolest way to zoom? I thought of a slippy map with transparency above the regular tiles. Others mentioned presets like continent/country. I could also imagine to let you set an arbitrary bounding box based on a zoom level. eg you say you want to see zoom level 13 and then you get a bounding box that you can place over the area of interest. Coolest would definitely be transparent tiles, as it's the most versatile. You (or others) could then implement presets for countries/states, take advantage of OpenLayers shift+click+drag zoom functionality, etc. You may want to consider using Google's Fusion Tables for this. Their map view will generate heat maps out of millions of points quite quickly. Plus, you could easily add a selection to narrow the maps down by user. I don't think you need to display Fusion Tables tiles in their API, either. Technically it's easy to add to OpenLayers but their terms might say otherwise. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
Very cool, thanks for sharing! Perhaps you could allow for customizing the bounding box. For example I've hardly edited anything outside of my state in the US, so I just have a tiny blob. Perhaps you could have country/state presets as well. Thanks, -Josh On Wed, Aug 3, 2011 at 4:06 PM, Stephan Knauss o...@stephans-server.dewrote: Hi, I presented this already on the talk-de mailing list, it could be interesting for others in the community as well. I have created a website that lets you see where you edited. According to the intensity of your edits a map is colored from dark red to bright green. For your convenience the site can be accessed using this direct URL: http://wdye.osm-tools.org/ Based on the feedback from the community I extended the site by the possibility to directly link to a specific username, e.g. Steve would use this link: http://wdye.osm-tools.org/?**Steve http://wdye.osm-tools.org/?Steve or http://wdye.osm-tools.org/**user/Stevehttp://wdye.osm-tools.org/user/Steve The site provides links to directly link to the images. As long as my server can handle the load hot-linking is fine. If you expect the image being requested quite often consider storing it on your own server. Hope you like the idea, comments welcome. Stephan __**_ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.**org/listinfo/talkhttp://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
On 03.08.2011 22:23, Josh Doe wrote: Very cool, thanks for sharing! Perhaps you could allow for customizing the bounding box. For example I've hardly edited anything outside of my state in the US, so I just have a tiny blob. Perhaps you could have country/state presets as well. I should have mentioned this earlier. I got quite a few requests for a zoom function already. I have prepared the data for zoom functionality already but am still working on the best way to implement it. So instead of letting you wait I started with a fixed zoom on global level. What would be the coolest way to zoom? I thought of a slippy map with transparency above the regular tiles. Others mentioned presets like continent/country. I could also imagine to let you set an arbitrary bounding box based on a zoom level. eg you say you want to see zoom level 13 and then you get a bounding box that you can place over the area of interest. Stephan ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
On Wed, Aug 3, 2011 at 4:53 PM, Stephan Knauss o...@stephans-server.dewrote: What would be the coolest way to zoom? I thought of a slippy map with transparency above the regular tiles. Others mentioned presets like continent/country. I could also imagine to let you set an arbitrary bounding box based on a zoom level. eg you say you want to see zoom level 13 and then you get a bounding box that you can place over the area of interest. Coolest would definitely be transparent tiles, as it's the most versatile. You (or others) could then implement presets for countries/states, take advantage of OpenLayers shift+click+drag zoom functionality, etc. -Josh ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Where Did You Edit
On Wednesday, August 3, 2011 9:49:18 PM UTC-5, Josh Doe wrote: On Wed, Aug 3, 2011 at 4:53 PM, Stephan Knauss o...@stephans-server.dewrote: What would be the coolest way to zoom? I thought of a slippy map with transparency above the regular tiles. Others mentioned presets like continent/country. I could also imagine to let you set an arbitrary bounding box based on a zoom level. eg you say you want to see zoom level 13 and then you get a bounding box that you can place over the area of interest. Coolest would definitely be transparent tiles, as it's the most versatile. You (or others) could then implement presets for countries/states, take advantage of OpenLayers shift+click+drag zoom functionality, etc. You may want to consider using Google's Fusion Tables for this. Their map view will generate heat maps out of millions of points quite quickly. Plus, you could easily add a selection to narrow the maps down by user. I don't think you need to display Fusion Tables tiles in their API, either. Technically it's easy to add to OpenLayers but their terms might say otherwise. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
