\chapter{Spatial Searching} The {\bf spatial searching} package implements exact and approximate distance browsing by providing implementations of algorithms supporting \begin{itemize} \item both nearest and furthest neighbor searching \item both exact and approximate searching \item (approximate) range searching \item (approximate) $k$-nearest and $k$-furthest neighbor searching \item (approximate) incremental nearest and incremental furthest neighbor searching \item query items representing points and spatial objects. \end{itemize} In these searching problems a set $P$ of data points in $d$-dimensional space is given. The spatial searching package consists of the following concepts and classes that are described in the reference pages. \ccHeading{Concepts} \ccRefConceptPage{Container} \\ \ccRefConceptPage{FuzzyQueryItem} \\ \ccRefConceptPage{GeneralDistance} \\ \ccRefConceptPage{IsoBox_d} \\ \ccRefConceptPage{OrthogonalDistance} \\ \ccRefConceptPage{Point} \\ \ccRefConceptPage{QueryItem} \\ \ccRefConceptPage{Separator} \\ \ccRefConceptPage{Splitter} \\ \ccRefConceptPage{Tree} \\ \ccRefConceptPage{TreeTraits} \\ \ccHeading{Classes} \ccRefIdfierPage{Euclidean_distance} \\ \ccRefIdfierPage{Euclidean_distance_sphere_point} \\ \ccRefIdfierPage{Fair} \\ \ccRefIdfierPage{Fuzzy_iso_box_d} \\ \ccRefIdfierPage{Fuzzy_sphere_d} \\ \ccRefIdfierPage{General_priority_search} \\ \ccRefIdfierPage{General_standard_search} \\ \ccRefIdfierPage{Kd_tree} \\ \ccRefIdfierPage{Kd_tree_node} \\ \ccRefIdfierPage{Kd_tree_rectangle} \\ \ccRefIdfierPage{Kd_tree_traits_point} \\ \ccRefIdfierPage{Manhattan_distance_rectangle_point} \\ \ccRefIdfierPage{Median_of_max_spread} \\ \ccRefIdfierPage{Median_of_rectangle} \\ \ccRefIdfierPage{Midpoint_of_max_spread} \\ \ccRefIdfierPage{Midpoint_of_rectangle} \\ \ccRefIdfierPage{Orthogonal_priority_search} \\ \ccRefIdfierPage{Orthogonal_standard_search} \\ \ccRefIdfierPage{Plane_separator} \\ \ccRefIdfierPage{Point_container} \\ \ccRefIdfierPage{Sliding_fair} \\ \ccRefIdfierPage{Sliding_midpoint} \\ \ccRefIdfierPage{Weighted_Minkowski_distance} \\ \lcHtml{\ccHeading{Alphabetical Listing of Reference Pages}}