Re: [OSM-talk] Public, no-cost, general-purpose tile servers
Hi, There are some additional OSM based maps with custom styling, which are provided by University of Heidelberg. You can find them here http://openmapsurfer.uni-hd.de http://openmapsurfer.uni-hd.de/?zoom=13lat=49.48176lon=8.46385layers=B00 Best regards, Max On 10/3/2013 6:36 PM, Andrew Guertin wrote: Hi, My university is converting our campus map to use OSM, and I was asked to look in to our options for tiles. Without going down the custom tile route, it seems like most of the publicly available tiles are for special purposes (biking, public transport, etc), and the only general road map style tiles I've found are the Standard tiles and MapQuest Open. Are there any I'm missing? Thanks, --Andrew ___ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] High Cartographic Quality Label Placement on OSM-based Map
That's really a pitty. How can someone profit from your work (aka Shoulders of Giants)? What worth is it pointing to us, how bad our label placement is and how good it could be by not giving us the tools to fix it? I did not want to abuse anybody. At frist I tried to present the results that can be achieved with great OSM data and than tried to clarify the difference between two approaches. That algorithm is a part of my PhD research. At the moment, due to some restrictions I am not able to share the tool and algorithms with others. Sorry for that general rant. I'm just sick of people doing wonderful things without telling anyone about how they did it. How can humanity evolve with such a mindset? As I wrote before the model that we use will be described in detailes in a journal paper. One, a researcher or a developer, can benefit from it as soon as it is published. I hope that the work, we have done, becomes a part of human knowledge. ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] High Cartographic Quality Label Placement on OSM-based Map
7/12/2013 12:18 AM, Christoph Hormann wrote: Could you explain in what ways this is the case. Since different types of labels are shown in various maps direct comparison is difficult. You seem to very well avoid overlaps between labels and none the less you are able to put quite a lot of them on the map but non-label feature do not appear to play a role in label placement and there are some strange priorities. Is the algorithm available as open source? Greetings, Avoiding of overlaps in map labeling is a constraint that is necessary. We can compare the map labeling on osm.org and on our map with the help of the list of cartographic rules for point-feature labeling. For example, they are: * R1. *Type arrangement should reflect the classification, importance and hierarchy of objects. *R2.*The lettering to the right and slightly above the symbol is prioritized. *R3.*Names of coastal settlements should be written in water. *R4.*Label should be placed completely on the land or completely on the water surface. *R5. *Names should not be too close to each other *R6.*Labels should not be excessively clustered nor evenly spread out. *R7. *Each label should be easily identified with its point-feature. Ambiguous relationships between symbols and their names must be avoided. *R8. *Label should not overlap other significant features of the cartographic background or do it as little as possible. As far as I know Mapnik and other open-source software take into account only the rules R1, R2 and R5 (partially, returns labels that are evenly spread out, example - http://maps.skobbler.com/on z11). And the greedy algorithm that is utilized to solve the label placement problem returns rather poor approximation to the optimum as there is no backtracking. Is the algorithm available as open source? Unfortunately, the algorithm currently is not open-source, but the model that we elaborated and used will be published as a journal paper within the next few months. All the best, Maxim Rylov ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
[OSM-talk] High Cartographic Quality Label Placement on OSM-based Map
Hi all, We are pleased to announce that a new web map based on OSM data has just been published. You can see it on http://openmapsurfer.uni-hd.de/ (OSM Roads (New) layer). One thing that greatly distinguishes it from other online maps is the quality of map lettering. We, the researchers the researchers at GIScience Research Group http://giscience.uni-hd.de/ at Heidelberg University, have elaborated a comprehensive multi-criteria model for high cartographic quality label placement and implemented it on top of a toolkit for publishing spatial data to the web. We applied this model to render a map for the globe on lower zoom levels (z2-z12). More information about improvements and updates you can find on our Blog page http://giscienceblog.uni-hd.de/. PS: Please, take into account that the tile cache for zoom levels greater than z12 is empty. All the best, Maxim Rylov ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Enhanced version of OSM Administrative Boundary Map at OpenMapSurfer.uni-hd.de
Hello Pavel! Thank you for your suggestion. We will try to take it into account. The current version of styles is not completed yet and has a lot of faults. Later we are going to improve styling and work on better label placement capabilities as well. Best regards, Max 6/11/2012 5:34 PM, Pavel Melnikov wrote: Hello Alexander! The layer looks very well, but I have small suggestion. Titles for level 6 seem to have big spaces between characters, about the size of the character height. It is kinda difficult to read with lengthy titles (at least here: http://openmapsurfer.uni-hd.de/?zoom=11lat=54.93732lon=82.9952layers=0BFFF http://openmapsurfer.uni-hd.de/?zoom=11lat=54.93732lon=82.9952layers=0BFFF ) Best wishes, Pavel On Mon, Jun 11, 2012 at 7:29 PM, Alexander Zipf z...@uni-heidelberg.de mailto:z...@uni-heidelberg.de wrote: Dear all, in case you have not noticed: Administrative boundaries from OSM at all administrative levels are being visualized on a new dedicated global map layer at http://OpenMapSurfer.uni-hd.de Maxim Rylov just has released the new second version of the admin layer with enhanced scale-dependent styling labeling. It uses data from both ways and relations and handels missing tags in ways through using admin_level. Still experimental, but... Future enhancements may include also the visualization of problems or errors with respect to boundaries in OSM. The map layer is also a test for a new label placement algorithm that can place labels on both sides of a linestring. This map adds to Maxim's Roads, Semintransparent and Hillshade layers at OpenMapSurfer. enjoy az http://giscience.uni-hd.de ___ talk mailing list talk@openstreetmap.org mailto:talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
Re: [OSM-talk] Enhanced version of OSM Administrative Boundary Map at OpenMapSurfer.uni-hd.de
Hi Colin, This is excellent, thanks! Can you say how often the admin boundaries layer will be updated? I have been doing quite a bit of work on them (in Kent, UK) recently and the changes are not showing up yet. Now it is not updatable. The layer is going to be updated every week. At the moment there is a lag about 10 days. We are looking forward to a new planet dump to make database reimport. It is also planned to run new version of database on postgres x64 for windows. We hope that it works faster. Max ___ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
