A few weeks ago I thought I should write something about my views on landuse. They flicker between liking landuse and disliking. Also should they share nodes with roads or be independent of anything else.
Overall I like them now an see reason for them, even in a finished map database. What if I want to make a map that doesn't care about navigation (or at least local navigation), a lot of maps just draw grey blobs where there are built up areas (aka the landuse in OSM). I would like to create a map of just landuse (okay maybe with water and parks to get your bearings) to show what it looks like. I am fixing up the landuse you did in my suburb, but my editing has to pass across to add housenumbers anyway! I will try and write up all my thoughts soon. On 25 May 2010 11:32, TimSC <[email protected]> wrote: > Hello people, > > I have finished a personal project of mapping landuse in Greater London > from yahoo imagery. The inner section (roughly underground zone 1) > cannot be usefully mapped from yahoo since all the buildings look the > same - houses don't have gardens that are discernible. Outside zone 1 to > the M25, the map benefits from land use data. The effort has been on and > off work since mid 2007 until yesterday! It took a while... I am > surprised that people don't comment on how odd the map looks without > landuse being assigned and work to rectify it. I also found many missing > roads and other interesting features. I started in Dartford and worked > roughly clockwise to get to Romford. I know people like to have highly > accurate OSM mapping, but users also expect good coverage. That allows > users to say "where the map is blank, there is nothing there". This is > not very compatible with a typical mapper thinking "where a map is blank > is where I should go mapping". The latter view is not sustainable as we > move towards good coverage. We need other tools to track progress rather > than coverage. Using source tags appropriately helps a great deal. > > Of course I did not do it all, so thanks for those who did land use in > this area. I hope people can use it as a basis for refinement based on > local knowledge and survey. > > The next step is to collect landuse data for the central area. I suspect > if people used their local knowledge, a significant amount could be done > with little effort. An alternative is to estimate it based on the > features and road layouts, but this is would not be very accurate. Or > does anyone have a better idea? Possibly a series of land use mapping > parties for central London? > > Regards, > > TimSC > > PS I have not done anything on tracing buildings recently, but I > probably will soon. > > > _______________________________________________ > Talk-GB mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk-gb > -- Gregory [email protected] http://www.livingwithdragons.com
_______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb
