[talk-ph] Relations for LRT/MRT lines

[Eugene Alvin Villar]

This is just my opinion. I view relations as data that cannot be easily
inferred from other data in the OSM database. The MRT3 ways are connected
end-to-end and have the same tags save for the layer, bridge, and tunnel
tags, so it can be easily inferred that they constitute one railway.
Therefore, I don't think an explicit relation is needed especially since
relations are harder to edit. For example, you cannot just merge two of the
ways in this relation into 1 way. You have to remove both of them from the
relation first, do the merge, then add the combined way back into the
relation.

But, I'd appreciate any input if my understanding of relations is wrong.


On Tue, Apr 7, 2009 at 11:21 AM, ian lopez <ian_lopez_1115 at yahoo.com> wrote:

> Before, the ways representing the MRT3 are disconected due to the "layers".
> Recently, I created a relation<http://www.openstreetmap.org/browse/relation/109159>that connected the said train line.
> My question: Can we apply this to LRT1 & LRT2 (and possibly PNR lines in
> the near future)?
>
>
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