Editing Geographic information system (section)

===Reverse geocoding===
{{main|Reverse geocoding}}
Reverse geocoding is the process of returning an estimated [[street address]] number as it relates to a given coordinate. For example, a user can click on a road centerline theme (thus providing a coordinate) and have information returned that reflects the estimated house number. This house number is interpolated from a range assigned to that road segment. If the user clicks at the [[midpoint]] of a segment that starts with address&nbsp;1 and ends with&nbsp;100, the returned value will be somewhere near 50. Note that reverse geocoding does not return actual addresses, only estimates of what should be there based on the predetermined range.