On 26/02/2014, Dave F. <[email protected]> wrote: > On 26/02/2014 10:27, Pieren wrote: >> On Wed, Feb 26, 2014 at 1:33 AM, Clifford Snow <[email protected]> >> Think that, in some parts of the world, you don't have high res. >> images and you cannot count the amout of lanes or see the shoulders or >> the limit between the road and next landuse. > > If there's no imagery to work from & the person has never seen the area > before then they really shouldn't be mapping it. If a visual survey has > been performed a bit of 'guesstimating' the distance to the centreline > from the boundary edge is *still* more accurate than attaching it the > the way of the road.
That guesstimate is often way off when you have no imagery and little data, because your sense of scale has no reference. I've made the mistake many times only to think "silly me" when revisiting an area once imagery became available. In that context, I agree that glueing the poly to the street may be just as good as separating it. At least then it's obvious that the data is just a schematic model and not an accurate-ish representation. _______________________________________________ talk mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk
