[Tagging] Housenumber interpolation with regularly skipped numbers

Tobias Knerr osm at tobias-knerr.de
Sat Oct 10 23:54:29 BST 2009

Anthony writes:
> In an interpolation, the number of houses is unknown.

I don't agree with this statement. I'd assume that an interpolation=even
between numbers 8 and 42 means that EVERY even number between 8 and 42
is represented by this way. (With the exception of numbers that are
tagged on individual nodes.) Apparently, you would read it as "an
unknown number of even housenumbers between 8 and 42 is represented by
this way".

My interpretation seems to be supported by the description of
interpolation in the Karlsruhe schema. Quote:

> For missing house numbers (e.g. missing "12") two ways
> need to be drawn (e.g. "1-11" and "13-25").

This separation wouldn't be necessary according to your interpretation
of interpolation, as the interpolation way wouldn't tell you whether a
certain number (12) is represented by it anyway.

Tobias Knerr

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