[Tagging] Problem with rendering natural=saddle

John Willis johnw at mac.com
Tue Oct 14 21:41:04 UTC 2014

Since the mapper of the saddle knows the direction, why can't the saddle have a directional icon rendered if it is on a way that represents the passable section of the saddle, following the ridgeline? Simple and effective. I'm sure the mapper understands the direction of the saddle quite easily.  The way itself doesn't need to be rendered, but the icon would be rendered In the midpoint of the way. 


> On Oct 15, 2014, at 2:28 AM, Alan Trick <alantrick at gmail.com> wrote:
> I'm a little bit late to this, since I don't read the list regularly,
> but I have some thoughts about this, and I hope something moves
> forward.
> 1. I think that if we render saddles, it would also be good to render
> ridge lines. Most maps I've seen render either both or neither. I
> think they certainly look more complete together.
> 2. While I think rendering a saddle/pass/col with the bridge icon
> would be better; I think that for the time being, just rendering the
> name would be fine. This is what the current USGS maps do.
> 3. While we could get direction from elevation data from elsewhere, it
> has it's issues. Elevation data can be misleading, particularly in
> rugged terrain.
> 4. In the above example of Col du Grand-Saint-Bernard, I would think
> the col is clearly east-west-ish. Sure, the road goes north-south, but
> where it meets the ridge, it goes east-west. There is a north-south
> col at FenĂȘtre de Ferret (http://www.openstreetmap.org/node/292049137)
> 5. I haven't looked at the rendering code yet, but would it be
> possible to define a col/saddle/pass as a point along a ridgeline, and
> its direction to be perpendicular to that line?
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