[OSM-newbies] Ungluing in Potlatch

[Ævar Arnfjörð Bjarmason]

On Tue, Jan 12, 2010 at 17:40, Richard Fairhurst <richard at systemed.net> wrote:
> Ævar Arnfjörð Bjarmason wrote:
>> It's easy in JOSM but much more difficult in Potlatch, it seems to
>> me that most people who complain about these areas being difficult
>> to edit are Potlatch users.
>
> I'm open to suggestions as to how it could be made easier to edit - I
> don't tend to do much landuse mapping myself so haven't any particular
> experience.

It really helps to be able to select more than one thing at a time.
For instance in JOSM where I have a square landuse=residential area
that shares one of its 4 sides with a road and I want to decouple it
from the road I can:

 1. Select the landuse=residential area
 2. Shift+Select the 2 nodes it shares with the way
 3. Split + Delete = I now have a landuse=residential with 3 sides
 4. Select the 3-sided landuse=residential + the 2 nodes it shares with the way
 5. Unglue
 6. Drag it away

You can also middle-click anything and get a selection list of objects
under that position.

All the editors I've tried have broken down at some point with complex
data like this, In some cases like when roads are folded in on
themselves (A->B->C->B) I've had to look at the raw XML to see what
was going on.