On Jan 14, 2008 5:00 AM, Andy Allan <[EMAIL PROTECTED]> wrote: > On Jan 14, 2008 4:29 AM, Karl Newman <[EMAIL PROTECTED]> wrote: > > > For that matter, I wish all closed ways which designate an area were > marked > > as such. I'm working on writing a tiling task for Osmosis which will > carve > > up data into rectangular grids (for feeding into GPS map creators such > as > > mkgmap). It has to treat closed ways differently than linear features > (hard > > clip them with synthetic nodes right at the boundaries and link the > clipped > > parts together). Without a universal tag such as area=yes designating a > way > > as a polygon (simply having a closed way is not sufficient--witness > > roundabouts), the tiling task will have to know about every type of tag > > which implicitly designates a polygon. Then when a new implicit polygon > tag > > is added, the task won't correctly treat it as a polygon until it's told > > about it. We really could use a generic method for designating polygons. > > To be honest, extra work for processors/renderers that saves work for > thousands and thousands of other contributors adding unnecessary tags > is, I'm afraid, one of the things we need to live with. > > If you want to argue for another primitive type in addition to lines > and nodes, that's a different matter. But extra tagging isn't going to > happen, especially with so many other renderers getting along without > it. > > Cheers, > Andy >
I was probably angling more for another primitive type, but I understand the reasons OSM doesn't have it. Although, I don't see that adding an polygon designating tag would be such a huge burden on mappers. How much mapping of areal features is done, anyway? Certainly ways are the dominating map feature. But, in the interest of not breaking stuff (the renderers would have to start requiring its use), I'll leave it alone and work around it by adding every new approved polygonal feature...
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