[Talk-us] Proposed automated motorway_link mass edit

[Apollinaris Schoell]

very nice check. it finds a lot of problems.
but the solution to fix it is wrong. checked 4 ways and on 3 it will  
break things even more.
did the fixes in josm but did not upload yet. can send the osm file if  
you like to check.
the tiger import has lot's of places where this is the correct fix.  
but it's wrong when the motorway_link is correct but just not  
connected to the motorway.
  after this change connection is still missing AND highway tag will  
be wrong.

I think you need to break it into 2 categories.
1) links which are connected at least to 2 other highways and none of  
the connections is in the same category
- can be fixed in most cases without breaking anything.
2) connected only to one other way. must be fixed manually. If you  
create the same report just for this category it will be great. and if  
you add a link for the josm remote plugin  it will be amazing.

thanks



On 16 Jul 2009, at 18:41 , Frederik Ramm wrote:

> Hi,
>
>    I'm new on this list but I assume that the problem I'm talking  
> about
> has been widely discussed. Someone from the US alerted me to the fact
> that TIGER only has one type of road link which was imported as
> motorway_link, and therefore you have little bits of motorway_link
> sprinkled liberally across the US.
>
> I propose to run a script that downgrades every motorway_link to the
> highest road type to which it is connected. A motorway_link that
> connects to a motorway remains unchanged; a motorway_link that  
> connects
> a primary and a secondary road will become primary_link, one that
> connects two tracks (yes, these do exist) will become a track also,  
> and
> everything in between.
>
> (This will sometimes cause whole sets of interconnected motorway_links
> to be downgraded, like this:
> http://www.openstreetmap.org/?lat=25.7839&lon=-80.28898&zoom=17&layers=0B00FTFT)
>
> Preliminary analysis shows that there would be roughly 28k changes
> across the whole US. I have prepared a full list of all proposed
> changes, arranged by state and county, here:
>
> http://www.remote.org/frederik/tmp/us-motorway-link-downgrade/
>
> I invite you to make some random checks (way IDs are linked to the
> openstreetmap.org browse page where you get to see the map context) to
> see whether my script does the right thing.
>
> I would then run the script after the weekend if nobody has any
> objections. (Anything that is changed by hand between now and then  
> will
> not be touched by the script.)
>
> Let me know what you think.
>
> Bye
> Frederik
>
> -- 
> Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00'09"  
> E008°23'33"
>
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