[OSM-newbies] JOSM: unjoin crossing / joining path at junction

[Jason Reid]

John McKerrell wrote:
> On 4 Jan 2008, at 22:43, Jason Reid wrote:
>
>   
>> Harald Kirsch wrote:
>>     
>>> If I accidently created a junction between two paths where it should
>>> rather be a bridge, i.e. no connections, how can I split the junction
>>> point in two points again? For now I always had to delete the  
>>> point and
>>> then perform some surgery on the severed ends.
>>>
>>> Is there a better way to do this?
>>>
>>> Harald.
>>>
>>>
>>>       
>> What I typically do is add a node fairly close on either side of the
>> shared node on all the ways that are involved, then simply select and
>> delete the shared node. I don't think there is really any other way to
>> handle it right now.
>>
>>     
> Do you mean that you have:
>
> ---*---
>
> When really you want:
>
> ---*-*--
>
> If so I'd just add another node in one of the ways, then split that  
> way on that node, resulting in three ways. You can then edit the tags  
> on the new short way to do what you need. I could be completely  
> missing the point though.
>
> John
>
>   

I believe he meant he had 2 ways that crossed that were joined, which 
means splitting can be done from:

     |
     |
---*----
     |
     |

to

       |
      *
       |
--*-*-*--
       |
      *
       |

Then delete the middle node, and any other un-needed nodes to leave 2 
ways that are crossing but not connected.

If its supposed to be a bridge you can then split it on the two nodes 
added on the way that has the bridge. This leaves the alignment of the ways

-Jason Reid