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Let's reproduce your sample data: charters=data.frame( school.name=c("oceanside","discovery"), school.id=c("008229","228881"), district.id=c("3400011","340020"), lat=c(39.3635, 40.7343), lon=c(-74.4350,-74.1745)) then make it a spatial points data frame: coordinates(charters)=~lon+lat assume the lat-long in charters is the same sort of lat-...


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If you have access to an Enterprise geodatabase, this is the use case for Geodatabase archiving. Quoting http://desktop.arcgis.com/en/arcmap/latest/manage-data/geodatabases/archiving-scenarios.htm: A similar example is helpful in parcel management. As edits are made to parcels over time, they can be kept in the archive class. If you want to view how ...


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