Editing Distance (section)

===Displacement and directed distance{{anchor|Displacement|Directed distance}}===
[[File:Distancedisplacement.svg|thumb|Distance along a path compared with displacement.  The Euclidean distance is the length of the displacement vector.]]
{{main|Displacement (vector)}}
The [[displacement (vector)|displacement]] in classical physics measures the change in position of an object during an interval of time.  While distance is a [[scalar (physics)|scalar]] quantity, or a [[Magnitude (mathematics)|magnitude]], displacement is a [[Vector (geometry)|vector]] quantity with both magnitude and [[Direction (geometry, geography)|direction]].  In general, the vector measuring the difference between two locations (the [[relative position]]) is sometimes called the '''directed distance'''.<ref name="ittcKU">{{cite web |title=The Directed Distance |url=http://www.ittc.ku.edu/~jstiles/220/handouts/The%20Directed%20Distance.pdf |website=Information and Telecommunication Technology Center |publisher=University of Kansas |access-date=18 September 2018 |archive-url=https://web.archive.org/web/20161110044317/http://www.ittc.ku.edu/~jstiles/220/handouts/The%20Directed%20Distance.pdf |archive-date=10 November 2016}}</ref>  For example, the directed distance from the [[New York Public Library Main Branch|New York City Main Library]] flag pole to the [[Statue of Liberty]] flag pole has: 
* A starting point: library flag pole
* An ending point: statue flag pole
* A direction: -38°
* A distance: 8.72&nbsp;km