InitScan: Initalization of the scan procedures by creating the matrix...

In HDSpatialScan: Multivariate and Functional Spatial Scan Statistics

Initalization of the scan procedures by creating the matrix of potential clusters

Description

This function initializes the scan procedures by creating the matrix of potential clusters.

Usage

InitScan(
  mini_post,
  maxi_post,
  type_minimaxi_post,
  sites_areas,
  sites_coord,
  system,
  mini,
  maxi,
  type_minimaxi
)

Arguments

mini_post	numeric. A minimum to filter the significant clusters a posteriori (see type_minimaxi_post). The default NULL is for no filtering with a a posteriori minimum.
maxi_post	numeric. A maximum to filter the significant clusters a posteriori (see type_minimaxi_post). The default NULL is for no filtering with a a posteriori maximum.
type_minimaxi_post	character. Type of minimum and maximum a posteriori: by default "sites/indiv": the mini_post and maxi_post are on the number of sites or individuals in the significant clusters. Other possible values are "area": the minimum and maximum area of the clusters, or "radius": the minimum and maximum radius.
sites_areas	numeric vector. Areas of the sites. It must contain the same number of elements than the rows of sites_coord. If the data is on individuals and not on sites, there can be duplicated values. By default: NULL
sites_coord	numeric matrix. Coordinates of the sites (or the individuals, in that case there can be many individuals with the same coordinates).
system	character. System in which the coordinates are expressed: "Euclidean" or "WGS84".
mini	integer. A minimum for the clusters (see type_minimaxi). Changing the default value may bias the inference.
maxi	integer. A Maximum for the clusters (see type_minimaxi). Changing the default value may bias the inference.
type_minimaxi	character. Type of minimum and maximum: by default "sites/indiv": the mini and maxi are on the number of sites or individuals in the potential clusters. Other possible values are "area": the minimum and maximum area of the clusters, or "radius": the minimum and maximum radius.

Value

The list of the following elements:

• filtering_post: logical, is there an a posteriori filtering?

• matrix_clusters: the matrix of potential clusters

• centres: the coordinates of the centres of each potential cluster

• radius: the radius of the potential clusters in km if system = WGS84 or in the user units

• areas: the areas of the potential clusters (in the same units as sites_areas).

• sites_coord: coordinates of the sites

• system: system in which the coordinates are expressed

• mini_post: a minimum to filter the significant clusters a posteriori

• maxi_post: a maximum to filter the significant clusters a posteriori

• type_minimaxi_post: type of minimum and maximum a posteriori

HDSpatialScan documentation built on June 8, 2025, 10:37 a.m.