Somewhat my thinking. With the addition that coincidence outside GIS comes up more in reference to time than space. And coextensive seems spatial but not temporal.
Liz,
I’d say it’s more or less synonymous. I’m also used to coincident because Esri uses that term. One definition of coextensive I looked up is “equal or coincident in space, time, or scope.”
Seems like coextensive would best apply to polygon records (“common extent” – the same boundaries)… where the focus is on the extents.
“Coincident” (“same occurrence”) I’ve often seen with point features, but it can be used as a general term that would include other geometries as well, including lines and polygons. Since the root is “incidence”, the best use IMO would be for geographic features
that are locations of events (e.g. crime points, fires, etc.)
But the basic idea that the exact same locations are covered by different objects is IMO the same.
Might also see coterminous.
Nick
I came across the term coextensive while reading some census material. Would anyone care to toss out whether or not they understand this to mean the same as coincident when we use it in GIS practice.
Where I read it.
https://www.federalregister.gov/documents/2018/02/15/2018-02623/census-designated-places-cdps-for-the-2020-census-proposed-criteria
------------------------------------------------------------------------- This list (CTGIS-L) is an unmoderated discussion list for all CT GIS Users.
To change subscription settings or unsubscribe, visit
http://s.uconn.edu/ctgisL.
------------------------------------------------------------------------- This list (CTGIS-L) is an unmoderated discussion list for all CT GIS Users.