Re: [Potlatch-dev] [OpenStreetMap] #4280: P2 does not correctly add nodes

[OpenStreetMap]

#4280: P2 does not correctly add nodes
-+--
 Reporter:  tom.davie@…  |   Owner:  potlatch-dev@…
 Type:  enhancement  |  Status:  new   
 Priority:  minor|   Milestone:
Component:  potlatch2| Version:
 Keywords:   |  
-+--

Comment(by tom.davie@…):

 Case 1 is not described by this bug report at all.  The behaviour of
 selecting a way, or nodes on a way would not be changed by it.  Only the
 behaviour of inserting nodes on a pair of ways that share a sequence of
 nodes.

 Case 2 is covered, but easily worked around as I stated earlier.  Select
 one way, select a node on it, press the split button, click the node at
 the split, then away from the forrest, then back to where you want the
 ways to rejoin.  Remerge the ways.  Done.

-- 
Ticket URL: 
OpenStreetMap 
OpenStreetMap is a free editable map of the whole world

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Re: [Potlatch-dev] [OpenStreetMap] #4280: P2 does not correctly add nodes

[OpenStreetMap]

#4280: P2 does not correctly add nodes
-+--
 Reporter:  tom.davie@…  |   Owner:  potlatch-dev@…
 Type:  enhancement  |  Status:  new   
 Priority:  minor|   Milestone:
Component:  potlatch2| Version:
 Keywords:   |  
-+--

Comment(by Rogerc):

 I think it would be extremely helpful to be able to choose one of the
 ways. I have encountered two situations in particular:
 1. Two almost identical ways with identical tags were superimposed. One
 was closed, the other was not. (I have found a significant number of such
 cases; presumbly an inexperienced mapper did this without knowing).
 Deleting one of them would be very hard without being able to select.
 2. Many areas (woodlands, lakes etc) have been entered in a rather blocky
 outline form, perhaps being traced from a public domain background. They
 often share boundaries with each other or with another way. More detailed
 mapping may show that they actually diverge and come back again from place
 to place. I do not agree that this is very rare. I recently found a place
 where a stream ran along the edge of a forest. The stream was split into
 sections and one section shared all its nodes with the forest. It was not
 possible to separate them - there was no unshared section. I had to delete
 the whole shared boundary and then regenerate both ways.

-- 
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OpenStreetMap 
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Re: [Potlatch-dev] [OpenStreetMap] #4280: P2 does not correctly add nodes

[OpenStreetMap]

#4280: P2 does not correctly add nodes
-+--
 Reporter:  tom.davie@…  |   Owner:  potlatch-dev@…
 Type:  enhancement  |  Status:  new   
 Priority:  minor|   Milestone:
Component:  potlatch2| Version:
 Keywords:   |  
-+--

Comment(by tom.davie@…):

 To me, if the two ways are already sharing the edge, then they clearly are
 intended to run along the same series of nodes.  It's very rare for you to
 create two ways with identical nodes, and then want to add a point in the
 middle where they diverge.  If you do, it could be simply done by
 splitting one way and adding a node away from the shared section, then
 rejoining.

 The heuristic proposed also breaks down even in the example given.  Many
 boundaries for example are defined as running down the centre of a road;
 or along the edge of an area of land use.

-- 
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OpenStreetMap 
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Re: [Potlatch-dev] [OpenStreetMap] #4280: P2 does not correctly add nodes

[OpenStreetMap]

#4280: P2 does not correctly add nodes
-+--
 Reporter:  tom.davie@…  |   Owner:  potlatch-dev@…
 Type:  enhancement  |  Status:  new   
 Priority:  minor|   Milestone:
Component:  potlatch2| Version:
 Keywords:   |  
-+--

Comment(by stevage):

 My preference: P2 notices there are multiple ways and offers you the
 choice.
 Alternative: P2 notices there are multiple ways and tries to guess which
 one you mean. (Still much better than the current situation, which is it
 basically picks at random.)

 One obvious heuristic would be to link "like with like": if your way has a
 highway=*, it should connect with a highway=* rather than a boundary=* or
 a landuse=*.

 The current behaviour can be irritating (and worse, lead to the wrong
 result) when you have something like an administrative boundary running
 almost parallel with a road). I sometimes end up having to physically move
 the admin boundary out of the way so I can work on a road, then move it
 back afterwards. That ends up slightly moving those nodes, of course...

-- 
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Re: [Potlatch-dev] [OpenStreetMap] #4280: P2 does not correctly add nodes

[Roger Calvert]

I prefer the reported behaviour - there are cases where one wants to 
separate the two ways for a short distance - for example there may be a 
clearing in a forest adjacent to a road which elsewhere is the forest 
boundary. This would be difficult to achieve with the 'expected' behaviour.



Roger Calvert


On 09/03/2012 15:55, OpenStreetMap wrote:

#4280: P2 does not correctly add nodes
-+--
  Reporter:  tom.davie@…  |   Owner:  potlatch-dev@…
  Type:  enhancement  |  Status:  new
  Priority:  minor|   Milestone:
Component:  potlatch2| Version:
  Keywords:   |
-+--
  Description:
  If you slightly missclick a way while adding a node to an edge which
  appears in many ways, the node can end up added only to some of the ways.

  steps to reproduce:
  1. create a polygon with a landuse tag
  2. create a polygon with a highway=primary tag sharing an edge with it
  3. shift-click the way to add a node, but slightly miss so that you only
  click the highway, not the landuse edge.

  Expected behaviour:
  P2  finds all ways that have an edge running between the two nodes, and
  inserts the new node into all such ways.

  Actual behaviour:
  P2 only inserts a node into the ways that were actually under the mouse.

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[Potlatch-dev] [OpenStreetMap] #4280: P2 does not correctly add nodes

[OpenStreetMap]

#4280: P2 does not correctly add nodes
-+--
 Reporter:  tom.davie@…  |   Owner:  potlatch-dev@…
 Type:  enhancement  |  Status:  new   
 Priority:  minor|   Milestone:
Component:  potlatch2| Version:
 Keywords:   |  
-+--
 Description:
 If you slightly missclick a way while adding a node to an edge which
 appears in many ways, the node can end up added only to some of the ways.

 steps to reproduce:
 1. create a polygon with a landuse tag
 2. create a polygon with a highway=primary tag sharing an edge with it
 3. shift-click the way to add a node, but slightly miss so that you only
 click the highway, not the landuse edge.

 Expected behaviour:
 P2  finds all ways that have an edge running between the two nodes, and
 inserts the new node into all such ways.

 Actual behaviour:
 P2 only inserts a node into the ways that were actually under the mouse.

-- 
Ticket URL: 
OpenStreetMap 
OpenStreetMap is a free editable map of the whole world

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