service. Geospatial blog; http://blogs.library.auckland.ac.nz/geospatial .... Laura Dawson, Auckland Council. ⢠Charlotte Warner, University of. Auckland.
• The procedures… • The numbers…
• The maps… • The stories…
• Napier Earthquake 1931… • Merging data
– most crown copyright maps exist only on paper (LINZ, NLNZ, privately) – NLNZ has some digital images – Loss of mapping records – Professional destruction of maps
– 140+ years of map production – physical maps are deteriorating – permanent storage/protection
– – – –
centralised storage and distribution most data available to general public worldwide restricted data available to all with permission Lack of publications and research
600 ppi contact scanning
Post-processing
– very fast – consistently high resolution – easy to operate equipment
– scanner introduced errors – unable to scan some items – double-sided image projection – wear on costly consumables
Georeferencing
GeoDataHub service
– single operator on site – 600 ppi resolution TIFFs – average 8-14 items/hr (60100/day) – protective sleeves when necessary – black paper for double-sided items – dual disks for backup
600 ppi contact scanning
Post-processing
Georeferencing
GeoDataHub service
600 ppi contact scanning
Post-processing
Georeferencing
GeoDataHub service
– value-adding – Global Mapper 12 – georeferencing to original projection unless unsupported (NZMG, TM) – all-in-one header containing both geographic extent and projection
– many old maps have unknown projections; others unsupported – can reference maps to other maps or build custom data and reproject
600 ppi contact scanning
Post-processing
Georeferencing
GeoDataHub service
– open-source catalogue of geospatial materials highly searchable: full-text, spatial, temporal – metadata entries for each item in repository catalogue allows distributed searching and metadata harvesting between portals -continued growth with contemporary geospatial materials – history of the GeoDataHub – special notes regarding materials in the repository – Information / Info graphs for each series Geospatial blog; http://blogs.library.auckland.ac.nz/geospatial
6
4
600
22,300
4,350
32
8
140+ years
4,588,984
All official maps done by the New Zealand government: LINZ and predecessors… • New Zealand Mapping Service (NZMS) • Lands and Survey (L&S)
General
Cadastral
Topographical
Aerial Mosaic
Street
Land Inventory & Soil maps
Aeronautical
Antarctic
Military
Pacific
Miscellaneous
Tourist
NZMS 3 N11-6 Date of photography: 1951 Completed: 1954
Hidden redoubt???Just below Maxwell, South Taranaki
NZMS 3 N137-5 1956 200ppi
Google Earth Imagery date 8/8/2013
Hidden redoubt???Just below Maxwell, South Taranaki
NZMS 3 N137-5 1956 200ppi
NZMS 3 N137-5 1966 200ppi
NZMS 3 N137-2 1956
Geographical board: Mission stations, 6 maps in total
Geographical board: Mission stations, 6 maps in total
L&S: J.R Lee, historical map series, 11 in total 1970
Miscellaneous maps: Offshore Islands, Chatham, 1883. Islands 5 maps in total…
NZMS 68 1916
NZMS 16 (Town plans): Mangonui 1887
NZMS 16 (Town plans): Alexandra-West 1879
Alexandra Redoubt 1872
NZMS 16 (Town plans): Mangonui 1887
Geographical board, Military maps: “Rangiriri Sketch of Maori works taken the day of capture 1863”
New Zealand Wars 1869
Russell [1840]
1887
1951
1925
1972
1865
[1870]
1878
1932
1933
1940
Queen St Wharf is visible on the left
Point Britomart (extreme right)
Quay St reclamation (right foreground).
Arch data Maps
Traditional knowledge
GIS database / Mapbook
Which types of archaeological sites appear on the map?
1884
1945
1995
20??
Value we give to our material heritage?
– Uni staff and students already have access – Outside access available through National libraries • All the maps we have done, but… – Indirect server houses: – NZMS, L&S, Historical Topo digital data: • https://gdh.auckland.ac.nz/ Misc maps available, but mediated through Igor
– GeoDataHub-TBA (some time this year) -Projection kinks
• Crown forestry material • Department of conservation maps • GNS • Ministry of worksMicrofilm-request at cost • NIWA
GeoDataHub • Website • Publications -Manual
• •
Geo-tagging Vectorisation
• Dr Simon Bickler, Clough & Associates • Laura Dawson, Auckland Council • Charlotte Warner, University of Auckland • David Rudd, Heritage New Zealand
