[OSGeo Africa] Municipal boundary demarcation

Gavin Fleming gavin at kartoza.com
Wed Jul 20 01:50:03 PDT 2016


On 20/07/2016 09:47, Peter Newmarch wrote:
> Aslam,
> Every time I have queried what appeared to be obvious errors in the 
> data where it does not follow cadastral boundaries, I have been told 
> by the Demarcation Board that the shapefiles are absolute and if a 
> house is 1cm the other side, it’s another municipality. Since such 
> limits are gazette, they in fact cannot be altered, even to fit the 
> obvious cadastral boundary. They don’t gazette the properties, but the 
> map.
that's crazy!
> Thousands of people have lost out on receiving houses in Housing 
> programs because of such bad ward delineation practices.
I agree, all administrative boundaries should be be composed of 
cadastral parcels. A shapefile or other GIS data set is merely a 
representation of such but the legal fallback for a municipality should 
be the survey diagrams of the properties that compose the municipality. 
Nevertheless, the GIS dataset should be sufficiently accurate to match 
the original cadastral boundaries!

This sounds like something the CSI should take up.

Gavin Fleming - Joint MD - PrGISc [PGP1234]
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