Whatever happened to the Multipurpose Cadaster?
This discussion reminds me of the “multipurpose cadaster” concept that used to circulate years ago. I don’t hear it mentioned much any more. Also we used to hear about the importance of “topology” and how that is the key differentiator between CAD and GIS.
It seems that what is missing in urban models is the connectivity, e.g. how do you walk from room 1240 in bldg A to room 5320 in bldg B ? Topology is what connects these. It also seems like early implementations of topology made us accustomed to thinking of connectivity solely in terms of polylines (e.g. street centerlines).
Perhaps we need to think of a building as a network of rooms. Each room is a node in the network. Links between nodes can be built based on doorways, elevators, escalators, etc.. With topology defined in this way, first responders could be dispatched more effectively.
Just so happens the best graphic I could find illustrating this concept is from the Texas GIS Forum being held in Austin Oct 27-31. While I’m not sure if there will be any presentations on building connectivity per se, it should be a good conference.