Liz <edodd <at> billiau.net> writes: >>Another person on this list mentioned that he didn't think of tagging >>traces with the mode of transport used.
>So I drive somewhere, walk a bit to get some details, unload the bike, cycle >some, drive home and now you think that I am going to split a trace into what >I was doing where? Not at all - I do just the same thing. I've uploaded lots of traces which are a mixture of different transport modes. (If I were mapping a new area from scratch then I might take the trouble to turn my GPS off and on when getting off the bus so I could have separate foot vs vehicle traces, but I wouldn't bother just for everyday GPSing.) >I ask this because you are thinking about collecting information and you >aren't thinking about the relevance of the gathered information to the >intended use of this information. The intended use is to add or adjust ways on the map based on GPS traces. Not every GPS trace corresponds to a way that exists - for example, some people make traces in aeroplanes, and they don't follow any street pattern. So it's useful to have some record of what kind of transport was used to make the trace. In the example you gave, you'd just mark the trace as 'mixed car / bike / foot'. Other people might upload a car-only trace and tag it as such, so that when someone is tracing it to add a new way, they can know for sure that this is a road suitable for cars. I'm not proposing that people spend half an hour assembling the exact combination of tags every time they upload a GPS trace. Quite the opposite. I think it would be a good idea to have a few simple checkboxes for [ ] car, [ ] bicycle, [ ] foot, so that it only takes a couple of seconds to add. >No, I am not going to add in which GPS unit I used. Fine. Nobody says you have to. If you don't remember what GPS you used, don't tag it. It will be useful for some people to know that information. (Not me personally - I hadn't realized that the GPS model might be useful until someone mentioned it in this discussion. I think it is wanted by hardcore geo-anorak types who want to know whether the traces adjust for height above the earth's surface, or have reliable altitude measurements. I haven't needed that data myself when mapping, but if it's useful for somebody and quick to add, why not add it?) -- Ed Avis <e...@waniasset.com> _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
