OpenStreetMap
OSM lacks behind other map services with Routing capability, because a lot of nodes lack connections. Many users are not aware of these issues. Better advertisement of tools like http://keepright.ipax.at could significantly improve map quality. Maybe it should be one of the default map layers?
Discussion
Reäksje fan Buadhai op 29 oktober 2009 om 00.33 oere
Thank you very much for this. I see many errors in my own mapping. But, I'm not sure how to fix some of them. Maybe a little tutorial on how to fix common errors would be in order?
Reäksje fan Guillaume Audirac op 29 oktober 2009 om 05.04 oere
In my opinion, the worst ones are the ways not properly connected to the whole road network, like:
- almost junctions
- intersections without junctions
Reäksje fan Chaos99 op 29 oktober 2009 om 07.24 oere
Well most errors I encounter are missing turn restrictions. They are still a little bit harder to tag than just roads and intersections and, more importantly, you tend to not remember them when just mapping along a GPS trace.
Reäksje fan Ethan O'Connor op 29 oktober 2009 om 19.47 oere
Another way to approach this, in addition to encouraging use of error-checking tools like http://keepright.ipax.at, is to make sure that the tools that people use to map encourage the practices that result in good topology. Just a simple check for unconnected ways as they are created and a quick, easy to dismiss pop-up message explaining OSM topology practices in potlatch would go a long way!
I know I was confused about this at first :) Then I learned to love the 'm' and 'j' keys in JOSM :P