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| bio | website | karussell.wordpress.com/about |
|---|---|---|
| location | Berlin, Germany | |
| age | 43 | |
| visits | member for | 10 months |
| seen | yesterday | |
| stats | profile views | 10 |
Java, JavaScript and ElasticSearch http://github.com/karussell
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May 6 |
comment |
Help choosing a suitable routing engine @mrg not sure if it is still a problem for you but there is OSRM (C++) and GraphHopper (Java). Both scale to world wide graphs and e.g. GraphHopper needs under 1gb for Germany (where I'm the author of) |
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May 5 |
comment |
Emergency Services: How to optimize routing by measured travel time? Of course all routing engines (including graphhopper ;)) are using this as estimation. BTW: Why is the network too large? Still I don't understand the main problem which you want to attack |
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May 5 |
comment |
Emergency Services: How to optimize routing by measured travel time? Ok, so you don't need the mean weights you want to calculate them ... but I still don't get the original reason of 'why' you want this. Also I see a problem as for some road types you can drive different fast (e.g. industrial area vs. inner city), and this leads to false results for the mean values. |
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May 5 |
comment |
Emergency Services: How to optimize routing by measured travel time? with Dijkstra (which is a many to one algorithm) .. not really linear optimization |
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May 5 |
comment |
Emergency Services: How to optimize routing by measured travel time? But why do you need an optimization? What can you optimize? Dont you 'just' need an information which tells you the time from x to every other points in the emergency service boundary? |
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May 5 |
comment |
Emergency Services: How to optimize routing by measured travel time? Do you mean something like this? wiki.openstreetmap.org/wiki/OSM_tags_for_routing/Maxspeed |
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May 5 |
comment |
Emergency Services: How to optimize routing by measured travel time? I dont understand what exactly you are looking for. Do you want to find out the speed of a certain road type ? Why? Isn't that already implicitly given by the road type + administration boundary? Or do you want to find a place for new emergency services? |
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Apr 23 |
awarded | Caucus |
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Apr 23 |
awarded | Constituent |
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Apr 18 |
suggested | suggested edit on How to implement a “Snap to Road”-functionality? |
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Apr 18 |
answered | How to implement a “Snap to Road”-functionality? |
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Apr 2 |
revised |
Libraries to render vector-based maps in the browser added d3.js |
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Mar 20 |
awarded | Commentator |
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Mar 20 |
comment |
Hashing functions for GIS data I'm not an hash-expert myself :) ! and you'r indeed right that collisions for SHA-1 (and even MD5) are rahter rare. But one advantage of my specific hash calculations could be (not tested it though!) that they are faster to calculate. BTW: the int hash value can be increased to a long or even byte array |
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Mar 17 |
revised |
Hashing functions for GIS data added 158 characters in body |
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Mar 17 |
answered | Hashing functions for GIS data |
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Mar 16 |
awarded | Quorum |
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Mar 8 |
awarded | Benefactor |
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Mar 8 |
awarded | Scholar |
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Mar 8 |
accepted | Libraries to render vector-based maps in the browser |
