new features in the danish address system -...
TRANSCRIPT
New features in the
Danish address system
Christian Fischer, [email protected]
May, 27’th 2016
www.septima.dk
Where are the adresses?
DAR 1.0 (”Danish Address Register”) is 100 % separated from other central
registers – Addresses are part of basic infrastructure, and is not depended
on Buildings, Cadasters, People etc.
DAR 1.0 is currently being developed by NetCompany.
Septima helps SDFE (Agency for Data supply and efficiency) to create
some new elements in the danish address register
4 new elements in DAR 1.0
”Street links” for all addresses – where do I park the car?
”Named street” – joins together seperate municipal streets
Area of effekt for streetnames – where is the ”Named street” ?
Reservation (housenumbers and streetnames)
Street links
The problem:
An ambulance has to find a specific address
The online GPS navigation system knows the coordinates for the address, but knows not where to park the ambulance on the street network, in order to reach the entrance door
Street links
The solution:
For each address, create a corresponding Geographical point on the street-network.
Street links
The challenge:
Difficult to calculate
The GPS vendors must be convinced to use the ”street link” in stead of address-point
Named streets
The problem(s):
All streets in Denmark are administrated by the municipalities
No one knows if two streets in two neighbour Municipalities in fact is two or one street
The two ”versions” of the street-name could be spelled differently
Normally a citizen don’t know much about municipality borders, so it’s difficult to understand why he gets two results when he searches for a street crossing a municipality border
Named streets
The solution:
”Named street” and ”municipality part of named street
No spelling variants for the same streetname
Easy to understand and admnister
95 % of the danish streets, will have one-to-one relation between ”named street” and municipality street
5 % of the streets will be joined together to a named-streeet
Named streets
The challenge:
To find all the situations where two municipality streets are in fact the same named street
Area of effect for streetnames
The problem:
The regulation ”A streetname must be unique within a radius of 10 km.” is difficult to enforce when you don’t know the excact ”area of effect” for a streetname
In the early stages of a street’s lifecycle, the excact geography is not known (no addresses and no centerlines). The AOE allows to draw temp. areas
Area of effecteffect for streetnames
The solution:
Create a Geographic area, that represent the appx. area of the street (including centerlines and address points)
Area of effecteffect for streetnames
The challenge:
How to make a ”nice”, understandable area, that reflects the area of effect for the street
Reservations
The problem:
When planning new residential areas, it is often nessecary to decide names of the streets in the area in an early stage.
When you decide the names you risk that the neighbour Municipality ”steals” the name before et is stated.
The same problem, occours when planning new housenumbers on a street, that crosses a Municipality border
Reservations
The solution:
Allow a municipality to ”reserve” a streetname (for a period of time), so it cannot be used by the neighbour municipality
Allow a municipality to reserve housenumbers on a street, that continues into the Neighbour Municipality
Reservations
The challenge:
There exists some ”non-formal” reservations in certain municipalities. The format is not structured and have to be handled manually
Existing house number-reservations, conflicts in some cases: eg: 2-998 in one municipality 38-42 in the neighbour.
Now for the creation process
Every calculations is done in PostgreSQL /
PostGIS
Only free available data is used in the process
Street links - creation process
Creation af street links, is based on a bunch of datasets:
The road-network (from GeoDanmark, SDFE)
The physical obstacles, buildings, rivers etc.
The Cadaster
The addresspoints
Street links - creation process
Street links - creation process
The obvious method – nearest street
Street links - creation process The obvious method – nearest street !
Street links - creation process
A better method – nearest street where the street-id is correct
Street links - creation process
Physical restrictions
Street links - creation process
Physical restrictions
Street links - creation process
Physical restrictions
Named streets - creation process
Creation of named streets links, is based on:
The road-network (from GeoDanmark, SDFE)
The addresspoints
Municipality borders
Named streets - creation process
Spot the difference!
Mind the gap!
Area of effect effect for streetnames-
creation process Calculations are based on:
The road-network (from GeoDanmark, SDFE)
The addresspoints
The named streets
Area of effect effect for streetnames-
creation process
Area of effect effect for streetnames-
creation process
Conclusion
When DAR 1.0 goes live it’s equipped with som
nice new features
Test-data are delivered – the final datasets are
in progress
I look forward to see the new elements live in
DAR 1.0
Thank you for you patience!
Questions ?
Christian Fischer, [email protected]
May, 27’th 2016
www.septima.dk
I love addresses