On 24 May 2010 14:43, Richard Fairhurst <[email protected]> wrote:
> > Tom Chance wrote: > > Getting buildings right is extremely time-intensive work > > It shouldn't be. The tools should help. > > I should have elaborated. I've found that the OS building shapes are very simplified, and often quite wrong. Not to mention lots of text over the top of shapes where there are place names, "School", etc. My approach has been to use the OS StreetView Data, Yahoo! imagery and personal surveys together, manually drawing then copying+pasting buildings where their shapes aren't just simple rectangles, or creating the terrace then extruding the correct shape for each home. There's a big difference in effort between a single untagged rectangle representing a terrace of houses (traced from StreetView, say), and that terrace being split into individual buildings with their correct shape and house number. The former could be automated for the country to provide a basic navigation aid. The latter needs a fair bit of mapping time for address searching and other uses where precision is necessary. Best, Tom -- http://tom.acrewoods.net http://twitter.com/tom_chance
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