[Talk-GB] Bridges (Edinburgh)
d.a_web3 at fiddes.net
Wed Aug 8 14:37:42 BST 2007
The rendering problem is fixed by adding the appropriate osmarender tags
to instruct it not to render Name or Ref for the bridge.
I am fixing this and other similar where ref or name are on roundabouts
in any places I go.
These tags are also useful to prevent small bits of street such as short
cul-de-sacs in housing estates which have the name of the street they
branch from having badly rendered name.
As to the reuse of segments - you can differentiate as Shaun has
described in JOSM but with Potlatch its potluck which you will pick and
so for maintenance I feel a bad idea!
Shaun McDonald wrote:
> On 8 Aug 2007, at 13:38, Minty wrote:
>> I've noticed many bridges around Edinburgh appear to be done using
>> three seperate Ways
>> See "George IV Bridge", and also "Castle Terrace" if you pan to the
>> left a little.
>> * way_before_bridge
>> * way_for_bridge
>> * way_after_bridge
> That's the way that it should be.
>> all three have highway and name attributes set to identical values
>> with the middle one also having bridge=yes.
>> Mapnik appears to be able to deal with this, but the
>> informationfreeway / tiles at home appear to get confused and render the
>> street name three times (once per way), which tends to look rubbish.
>> But it also seems wrong and over-complicating things to me.
>> Would it not be better to have:
>> * one way for the whole of the street, with highway and name set.
>> * A second Way for the segments covering the bridge with the only
>> attribute being bridge=yes (and name= if the bridge itself has a name
>> distinct from the road).
> This is a renderer problem, not a data problem. It is better to have
> more ways, than ways that are too long.
>> Also, on a related topic. Say I have Ways created in a loop to define
>> a Park, and use the same segments to create a second Way for a path
>> around the boundary of the park. I cannot fathom how to control which
>> way is selected when I click in JOSM. It appears to pick one, and I
>> am unable to select the other. If the two ways have some different
>> segments, you can often work around this, but when they share the same
>> segments, I'm stuck.
> To select a specific way read
> http://wiki.openstreetmap.org/index.php/JOSM/Advanced_Tricks item 2.
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