Nice work Matt Cheers Andy
>-----Original Message----- >From: Matt Amos [mailto:[email protected]] >Sent: 10 June 2011 4:20 PM >To: SteveC >Cc: [email protected]; Richard Fairhurst >Subject: Re: [Talk-GB] OSM Analysis New Data and bot > >On Fri, Jun 10, 2011 at 12:36 PM, SteveC <[email protected]> wrote: >> There are tons of things. People drive in the US so pubs are difficult to >arrange things around. Mapping in the US is boring because of the big gridded >cities. I map much less in the US than the UK. It's not just that there are roads >there already, which by the way is a good thing because I have sat for hours >correcting them against aerial. >> >> It's just not that simple to say imports killed it. > >some interesting facts: > >http://matt.dev.openstreetmap.org/editors_urban_per_month.png >http://matt.dev.openstreetmap.org/editor_growth_comparison.png > >when the AND import ran (around sep '07), it seems the NL community was >already about an order of magnitude larger than the US community when the >TIGER import ran (roughly sep '07 - feb '08). in the comparison, with fewer >countries but the time base adjusted so that they all hit 1 user per month per >million urban population at the same time, it's pretty clear to see that the UK, >NL and RU communities seem to be carving roughly the same path. the >germans grew much faster over their first 3 years than other communities. > >the US is difficult to interpret. one view is that it grew at approximately the >same rate as UK, NL and RU until about 1.5 years in, where it plateaus. that's >late 2009, when there was lots of TIGER fixup activity and some big mapping >parties (e.g: Atlanta). the alternative view is that the growth rate is actually >smaller, but that there's a temporary peak mid-late 2009 which masks that. > >given that these numbers are normalised to the *urban* population, >population density issues don't come into it - we're basically looking at cities. >and given that AT and RU have a much lower proportion of their populations >in urban areas than the US. Canada has about the same urbanisation as the >US, and similar gridded cities, and similar attitudes to driving [1], but a growth >curve the same as France or Spain. > >this doesn't tell us what the cause of slow community growth in the US is, but >it does tell us that it isn't population density, it isn't driving attitudes and it isn't >the interestingness (or not) of the road layout. > >cheers, > >matt > >[1] 77% of Canadians use public transport "a few times a year" or less, >compared with 88% of those in the US, 48% in the UK and 13% in Russia, >according to >http://switchboard.nrdc.org/blogs/kbenfield/natgeo_surveys_countries_tran >s.html > >_______________________________________________ >Talk-GB mailing list >[email protected] >http://lists.openstreetmap.org/listinfo/talk-gb _______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb
