> > What would be the novel aspect(s) of your GIS app? > Metadata is my main concern, and it's important in GIS and could be improved upon there -- IMHO. I get the impression from my research that the future of serious metadata is rooted in type theory and graph databasing, i.e, being able to jump out of a hierarchy. I watched a long video called The Semantic Representation of Mathematical Knowledge (https://youtu.be/psSyM1zp82k), and these brainiacs gave me the impression that good metadata (for something as difficult as math) must be based in type theory.
A while back I worked at a county assessor's office, and we had an ancient mainframe that kept track of the county's thousands of land parcels. Typically, assessors deal with parcels being split or merged -- or at least changing hands. If the lines did in fact change, our system would simply create a new state, old state gone, old lines forgotten. I was brought in to do GIS, one task being to create a history of land use/parcel changes. Neither my ESRI rig or the mainframe had a way to do this -- and all my suggestions made bureaucrats nervous... Functional -- at least in theory -- should allow this sort of bifurcation and, as I call it, "parallel universing". Maybe I'm getting "too far afield," but a never-ending recursion (e.g. infinity mirror) is what land/land use is about -- at least if you want to avoid what our mainframe was doing. I don't fully grok the whole bitcoin blockchain, but my initial understanding is that this is sort of giant recursion too ... but perhaps I'm straying off into the weeds a bit. I'm still green, but what I hear about metaprogramming would also be a benefit to GIS, although types and metaprogramming probably don't mix? -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
