[Tagging] Layers (was Eruvs etc.)

[Marc_marc]

Le 07.09.22 à 22:21, Greg Troxel a écrit :
about GIS
> When editing, often people turn on "snapping" so that positioninng a
>    point object or a vertex of a line/polygon will result in exact match
>    of an object in some other layer.

it seems it solves little or nothing compared to what is already 
possible in josm:
2 layers have a node at the same position, e.g. the entrance to the 
underground parking under a shopping centre
tomorrow someone realigns the roads in the relevant layer:
- if the system has stored that it is a shared between 2 layers, the car 
entrance ends up at a twisted location in the building layer
- if the system has not stored that it is a shared position, then the 
road no longer reaches the building