[OSM-talk] address interpolation

Tobias Knerr osm at tobias-knerr.de
Fri Oct 2 10:19:55 BST 2009


Peter Körner wrote:
>> But, when you see an interpolation "25 to 25c". How do you know that this
>> means "25, 25a, 25b, 25c"? You again remove the number. That gives you the
>> first entry. But what happens then? 
> You count to the end of this interpolation-way (there are 4 nodes in, 1 
> is the start and 1 is the end, so 2 in between) and substract this 
> number (2) from the last char (c).

What you have is a way with _two_ nodes: start and end node. The first
node has an addr:housenumber=25 tag, the last node =25c. The last node
could also be addr:housenumber=25f. The number of houses represented by
an interpolation way doesn't have anything to do with the number of
nodes in the way.

Tobias Knerr




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