[talk-au] Potlatch and unconnected roads

[Michael Lenser]

Maybe I don't understand the problem correctly but wouldn't the  
Validator plugin  for JOSM detect the crossovers that are unconnected  
pretty easily? I can't think of any existing method to detect ways  
that are unconnected but VERY close to each other although they MAY be  
detected as "Similar named Ways" by the validator plugin (if they have  
the same street name)?

Regards
Mike.

Quoting stevez at tpg.com.au:

> I believe there should be way of checking this too.
>
> I've seen a lot of errors in the OSM data where Gosmore would not route
> properly, even though the rendered map (on informationfreeway.org or
> opernstreetmap.org) "looked" OK.
> Just because the map "drawn" in pixels looks OK, doesn't mean the data
> is correct.
> Oh, and just to stir things up a bit - most errors of this type really
> do have created_by=potlatch tag set!
>
> Steve Z.
>
>
> Quoting Nick Hocking <nick.hocking at gmail.com>:
>
>> Most of Canberra has been mapped with potlatch and using imagery. I
>> believe
>> that this is going to cause quite a few problems, but one of the
>> bigger
>> problems is that of unconnected roads. It seems that it is very easy
>> to
>> leave roads unconnected when using potlatch and I think that there
>> are
>> hundreds, possibly thousands of them in Canberra alone.
>>
>> Moving roads with JOSM and noticing intersecting ones that stay
>> still, shows
>> the errors but this is a time consuming task given the scale of the
>> problem.
>>
>> Is there a program that will analyse the OSM data and highlight
>> those
>> highways (on the same layer) that cross but do no have a common node
>> at that
>> location.  This, as a side benifit, would also pick up those
>> overpasses that
>> have not been given a layer tag.
>> WE'd also need to indenify those roads (on OSM) that get VERY close
>> but do
>> not actually meet, since these may also be in error.
>>
>
>
>
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