# [Tagging] Housenumber interpolation with regularly skippednumbers

Liz edodd at billiau.net
Sun Oct 11 06:10:04 BST 2009

```On Sun, 11 Oct 2009, Randy Thomson wrote:
> Of course, there are many places, mostly in commercial land-use areas
> that meet your example of widely and irregularly spaced numbers. I
> wouldn't attempt to use interpolation in such a situatation, but would
> either tag a building outline or a building node with the address. I am
> speaking of areas where the skip is orderly, regular, consistent
> (somewhat reduncant terms).

I'd like to describe the potential numbers on my rural road.
I can't image how any form of interpolation will ever win with situations like
this.
(The variable here is always an integer)
You can have an address which is F\$, an address which is NIP\$, or a rural
number, which is actually designed with some underlying logic.
You cannot have both an F\$ and a NIP\$ as F and NIP are mutually exclusive.

Rural numbering is described here http://tinyurl.com/yhv7ady which is a large
PDF (be warned), so this is a summary of the most important part

"Rural Road (RR) numbers are allocated in a logical sequence based on the
distance of primary access point to each property from the nominated start(one
"Rural Road (RR) numbers are calculated by dividing the distance in metres
from the datum point by 10 and rounding down to an odd (for properties on the
left) or even number (for properties on the right) as required.
"For example a property entrance 930 m from the datum point and situated in
the left-hand side of the road will have a number 93.If the property entrance
was on the right-hand side of the road then the rural road number will be 92."

Another sort of address is RMB\$, and this can exist along with F\$ or NIP\$.
There are no RMB\$ on my road, as we don't have a mail service.
Then in some areas only the name of the mail route is used as the property
address eg MS Blue or MS\$, and the property owner hangs out a sign with the
names of the residents on it.

Don't worry about interpolation being difficult - just come and try and sort
out these sort of numbers!

```