[talk-au] JOSM multipolygon how-to?

[stevea]

On Apr 7, 2022, at 10:36 PM, Andrew Harvey <andrew.harvey4 at gmail.com> wrote:
> It means JOSM hasn't downloaded all the member ways, in one of the panels on the right showing the relation, right clicking download incomplete members will fetch them all.

Yes, Graeme, if you see in the bottom left pane of JOSM's relation editing window "incomplete" as some of the members of the relation, you should click one of the two bottommost buttons along the left edge of this window:  either "download all incomplete members" or "only download the selected ones" (in the left-half of the bottom of the window).  The icons should make clear which is which (or will with practice).

If you aren't going to "work with" (edit) or upload that relation, this isn't strictly required, but only seeing / having in your JOSM edit buffer some of the pieces of a relation (of any type) can cause some rather undefined behavior.  It takes practice to see this and know what to do with situations like this, but you get the hang of it after working with relations whether you do or don't need to download any additional members.  Basically, if you are editing that relation, absolutely, you should download all members.  If you are simply taking a look, not so much.