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clarification on data structures for part 1
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== Data Structures ==
There are two main concepts for this project:
# Data Dictionary (TreeMaps and TreeSets for part 1)
#* Related commands:
#** createCity
#** deleteCity
#** listCities
#** clearAll
# Spatial Map (PR Quadtree for part 1)
#* Related commands:
#** deleteCity (if the city is mapped)
#** mapCity
#** unmapCity
#** rangeCities
#** nearestCity
#** saveMap
#** clearAll
An important concept to remember is that the data dictionary is not the same as the spatial map. If you create a city, it is not mapped in the spatial map.
== Basic Operations ==
== Basic Operations ==
* [[mapCity]] and [[unmapCity]]: These take a city that's already registered in the database and add it to or remove it from the spatial data structure.
* [[mapCity]] and [[unmapCity]]: These take a city that's already registered in the database and add it to or remove it from the spatial data structure.
* [[listCities]]: Output a sorted (XML) list of cities in the database.
* [[listCities]]: Output a sorted (XML) list of cities in the database.
* [[rangeCity]]: This searches the spatial data structure for all cities within a given radius of a given point.
* [[rangeCities]]: This searches the spatial data structure for all cities within a given radius of a given point.
* [[nearestCity]]: This finds the nearest city to a given point in the spatial map.
* [[nearestCity]]: This finds the nearest city to a given point in the spatial map.
* [[printPRQuadtree]]: This outputs an XML (textual) representation of the spatial data structure.
* [[printPRQuadtree]]: This outputs an XML (textual) representation of the spatial data structure.