The tools for finding map errors are one way of finding some map errors. Additionally I am looking at rendering errors and gradually 'fixing' them.
As a comparison I have used the errors reported on http://alternativaslibres.org/en/downloads.php for the UK and OZ as; these are updated daily so I can track progress. the completion between OZ and UK can be an incentive to get 'our' errors down. Yes the UK is a smaller size, but they have a greater population, and they therefore should have a greater number of things mapped. Anyway here it is. File sizes in kbytes Error type OZ file size UK file size Turn restrictions 179 480 Roundabouts 1015 130 One Way roads 193 415 Multiplygons 172 1,200 Motorway exits 18 30 House Numbers 605 5,600 Flares 173 188 Barriers 29 153 Arcs 4,000 25,000 Doing well over all .. my experience with them; roundabouts are not doing well, there is a tendency to have 2 roads join the roundabout at the same place ... and that generates an error. The separate roads should join the roundabout at different places. Tiresome to fix as it makes little difference to the map, should make a difference to voice routing. Multipolygons have gone down from 240 to 172 so far, I have been tackling them. Mostly ways inner and outer sharing nodes, some crossing ways. Makes a difference to map rendering. Turn restrictions .. only a few samples by me so far .. but they look to have some members deleted. It would be handy to have names on these to say what they were .. e.g. no right turn from Macquarie St to Bridge Rd. That would make restoration and checking much easier. I have deleted some that never made sense. Others I have left messages for. Makes a difference to routing. One way roads .. again only a few samples. But they look to be roads that have no connection - so there must be a large collection of vehicles at the .. or it never gets used. :) Makes a difference to routing. Barriers ... again only a few samples. These seem to be a barrier (gate) that is on more than one road .. say where 2 roads cross at right angles and the node where they cross is a gate ... must be a strange gate :) Makes a difference to routing. _______________________________________________ Talk-au mailing list Talk-au@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-au
