[OSM-talk] Historical Data in OSM database

[M∡rtin Koppenhoefer]

2010/11/12 Andrew Zaborowski <balrogg at gmail.com>:
> Actually the Sagrada Familia is a good example of the problem with
> modifier tags like "width": it's not clear which feature they apply to
> if one node or way or relation represents more than one feature.  The


IMHO width on a node is problematic in general, as it is not clear
which extension is refered. width on a polygon is pointless IMHO, so a
closed way with width associated is probably a closed line and not a
polygon.

Problems with width arise e.g. on a node barrier=block, where it is
not clear if it refers to the block width of the free width around the
block (i.e. on the highway).

cheers,
Martin