Andy, the operator tags are all the same, not the building names. But also the assertion "within a few dozen miles" is wrong, as for Nottingham in China.
On Fri, 22 May 2015 at 14:23 Andy Allan <[email protected]> wrote: > On 22 May 2015 at 14:03, Christopher Baines <[email protected]> wrote: > > On 21/05/15 22:39, Dan S wrote: > >> I don't relish bringing this up since it's a bit of a tangle, but I > >> noticed Cambridge has a lot more universities than I thought! > >> Apparently 1219, judging from the number of amenity=university tagged > >> objects. In real life I'm aware of two: Cambridge Uni, Anglia Ruskin > >> Uni. > > > > I think that it is a poor assumption to make that there exists a one to > > one mapping between objects (nodes, ways, relations) tagged with > > amenity=university, and actual organisations. > > Sure, but then you need to look at what is actually being tagged. > We've already heard that there are 1219 different universities in > Cambridge, so I was intrigued as to what they are. After all, I would > expect "amenity=university; name=University of Somewheresville" to be > a university. If there were two objects tagged as universities with > identical names within a few dozen miles, I could make a guess they > are the same university and write some rendering rules to suit. > > But they are all different. There's a university named "Music Centre". > There's another university called "Pavillion D". There's a third > university called "Forbes Mellon Library" which is a surprising thing > to call a university. There's a bunch of little unamed universities. > And they all have different operator tags too. > > I suspect these are the names of buildings, not universities. I > suspect they are operated by different sections of the one university, > but there's no easy way to tell from the operator tag without a > natural-language parser coupled with a wikipedia-based explanation of > the constituent college system. > > Have a look at the data, and you'll see it's not as straightforward as > you think. Sure, there's no one-to-one mapping between the real world > and OSM features. But that's not what we're talking about here. > > Thanks, > Andy > > _______________________________________________ > Talk-GB mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/talk-gb >
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