[Tilesathome] Rendering of tiles with no nodes?

[Maarten Deen]

On Wed, Aug 13, 2008 at 11:00:10AM +0200, "Marc Sch?tz" wrote:
> > I was wondering: how are tiles with no nodes but with a way across it
> > rendered? Are they rendered properly or will the be rendered empty?
> > 
> > I'm asking because I requested tile 2872,1290 at z12 (and I believe I
> > requested it twice) and it comes back as empty. It has one railway running
> > across it.
> > 
> > See the details at
> > <http://tah.openstreetmap.org/Browse/details/tile/12/2872/1290>
> 
> The client downloads a bounding box slightly larger than the tile. If a way crosses that bounding box but has no nodes in it, it is not returned by the API.

I feared as much.
Is there an easy way in JOSM to see tile boundaries? You see them in
potlach, but I haven't found an easy way to add a node to an existing
way there.
Or what is the best method to ensure that these kinds of ways will be
rendered? Put nodes at no more than x distance from each other? This
will work for sufficiently small values of x, but how small? How much
overlap does the client take?

Maarten

-- 
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because of lack of appropriate equipment. That was something that came
to my mind on the spur of the moment."
(Gerry Armstrong at the 2000 Samsung Open in Brighton after Ivanisevic
 broke all his rackets in frustration)