Wrong warning: crossing waterways (canal)

[RicoZ]

simply can not make any sense of it:
Id 241851378
Id 93043061

[Don-vip]

It looks like the level=-1 is not taken into account.

[Don-vip]

Of course not it should be layer=-1. It works as expected.

[RicoZ]

what should be layer=-1? I have one way that is without layer and one way with layer=-1, so why this warning??

[Don-vip]

​http://www.openstreetmap.org/browse/way/241851378 is tagged with level=-1 instead of layer=-1
See:
​http://wiki.openstreetmap.org/wiki/Key:level
​http://wiki.openstreetmap.org/wiki/Key:layer

You're confusing these two keys; they have absolutely not the same meaning. Level is for buildings while layer is for general mapping.

[RicoZ]

sorry, totally stupid mistake from me.

However - :

• technically two ways do not cross if either level or layer doesn't match, so this warning is still wrong even if using layer would have been the right thing in this case. I have seen indoor waterways where tagging with level might be correct.
• it would be good to warn confused users like me tagging waterways (or other random features?) with level because it makes sense pretty rarely.

[Don-vip]

No problem :) Do you have any example of indoor waterway ? I'm a bit curious about that.

[RicoZ]

indoor water parks, aquariums, indoor waterfalls with artificial creeks and pools in some large shopping centers. Depending whether or not the waterways are bound to specific levels of the building either layer or level may be more appropriate to use.