osm_line2poly limitations

[richardbeare]

Hi,
I don't have time to track this down at present, but the following bounding box leads to incorrect behaviour in osm_line2poly for this bit of coastline

bbox.F <- rbind(c(min= 144.75, max = 145.6),
                c(min= -38.41, max = -37.75))
rownames(bbox.F) <- c("x", "y")

I think the problem is cause by multiple cutting of peninsulas.

May be that the current approach is too simple, and that we need to do something quite complex, probably requiring sf, unfortunately.