To grid or not to grid

To grid or not to grid

• 1.
  To Grid or notto Grid? Andrew Zolnai zolnai.ca Geocomm 2017 Wikimedia and andretchaikowsky.com
• 2.
  Scalable grids Proto-GIS (1988)DB2 Spatial (2006) bit.ly/2xA7q5H
• 3.
  Tesselation grids Geodyssey (1992)Pyxis (current) what3words bit.ly/2xWXXX5 bit.ly/2xk29iR map.what3words.com
• 4.
  NADM (2002) Cordillerangeology Spatial object models on.doi.gov/2wbdv4S arcg.is/2waqrYI
• 5.
  Non spatial addressing Postaladdress clean-up bit.ly/2waZ0y1 bit.ly/2pyNGri
• 6.
  Open standards bit.ly/2fF9a3O One ofthe core contributions of a DGGS is geospatial data fusion on demand. In a multiple provider environment, fusion is only possible with an information system architecture based upon open standards. The OGC DGGS Abstract Specification provides a platform to enable interoperability within and between different DGGS implementations while promoting reusability, knowledge exchange, and choices in the design of individual DGGS implementations. ow.ly/JeXK30g5EHW
• 7.
  When is amap not a map? “Real-time mapping without the drift” bit.ly/1Y8M2bi
• 8.
  Or when isa map not possible? Former Soviet Union, West Siberia 2002 Bearing Distance deg min sec m 2 30 0 2000 358 20 0 5500 5 10 0 22500 7 30 0 2000 355 40 0 1500 272 30 0 4000 281 10 0 6000 268 30 0 6500 180 0 0 7500
• 9.
  Modern geolocationAre coordinates,projection, datum etc. always à-propos? Are there better frameworks for real-time crowd-mapping? Do robotics ‘think’ or work in Cartesian space? Are base 2 or 10 the best there is? How about ‘good enough’ or ‘close enough’ computation? Bonus Tales from the geodetic crypt bit.ly/2xlBh1Y
• 10.
  Thank you! Questions? Andrew Zolnai @azolnai