Hi,
I’ve noticed that the SA Survey marks have been released as open data on the
27th of July (3 days ago)
https://data.sa.gov.au/data/dataset/survey-marks-and-survey-mark-plans-reference
<https://data.sa.gov.au/data/dataset/survey-marks-and-survey-mark-plans-reference>
This should be quite useful for georeferencing the Bing Imagery as there are
many survey marks visible in the photographs and the offset is often 2-3 meters.
I’m intending to add marks I can see on the ground (square rusty metal plates
about 10cm plates labelled ACC in the Adelaide City Council) and in Bing and
use this to better align North Adelaide and put data in the OSM Imagery Offset
database, which seems very deficient in Australia generally.
This is quite a pleasing addition but to be of value will need other mappers to
use the imagery offset database, rather than simply tracing Bing without an
offset. Next one on my wishlist is the Property Cadastre, which will no doubt
come to pass. Off topic my previous wishes have included Traffic Volumes AADT,
Road Crashes - individual crashes not summated, now all available on
data.sa.gov.au <http://data.sa.gov.au/>
Alex
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