On Saturday 18 August 2018, Peter Elderson wrote: > Sure. But is there a standard method to indicate this uncertainty in > OSM, which can be processed by data consumers?
This is outside the scope of of OSM IMO and not practical for mappers to determine in a meaningful way. You can specify the method used to determine the width (using source:width=*) and different methods will have different inherent measurement accuracies but the accuracy of the values depends on lots of other factors beyond that. Practically mappers have usually no way to verifiably determine the accuracy of their measurements unless they have a reference value of known high accuracy in which case the whole excercise is pointless. Theoretically mappers could practice their measurement skills and assess their personal measurement accuracy based on test measuring a statistically significant number of cases under comparable circumstances with a known accurate reference value but practically this is not feasible. -- Christoph Hormann http://www.imagico.de/ _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
