Tom's strategy seems to be appropriate for woods areas: Canvec 'giant monster' multipolygons represents a set of several polygons quite closed but not adjascent , mostly separated by meadow/scrub or fire cut-lines or rivers, or roads ....
By the way: membership as 'inside' role of wood multipolygon is useless for a lake So, you never need 'outside' or 'inside' role: just keep outlines of wood. Mapping this way avoid the use of multipoygons, and encourage the use of simple polygons (prefered). (imo) Simplier is better ;) But .... indeed.. i agree with Sam: is time consuming ! :( Perhaps a motivation to encourage membership of new OSM contributors, as we celebrate the 10th of OpenStreetMap !! ;-) The more we are.. the less we do ;) Bruno 2014-09-15 11:46 GMT-04:00 Tom Taylor <tom.taylor.s...@gmail.com>: > Might be dull, but I generally split multipolygons into reasonably-sized > adjacent chunks rather than giant monsters. In my case, it's usually when > I'm outlining a river. > > Tom Taylor > > On 14/09/2014 10:29 PM, Sam Dyck wrote: > >> HI >> >> Currently I'm working on importing the Canvec tiles that make up Lac >> Seul in NW Ontario into OSM. Importing the data as it is, split into >> tiles and subtiles, is poor practice, and manually merging is time >> consuming and dull. So I began using JOSM's Join Overlapping Areas >> feature. This tool however requires that all ways be complete before >> merging. Resulting is a 100 000 node area that far exceeds JOSMs import >> limit and is time consuming to split up, and slows down JOSM. Is there >> an faster way to split this? >> >> Sam >> >> >> _______________________________________________ >> Talk-ca mailing list >> Talk-ca@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/talk-ca >> >> > _______________________________________________ > Talk-ca mailing list > Talk-ca@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-ca > -- Bruno Remy
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