s2pp: Spherical point pattern

In spatstat/spatstat.sphere: Point patterns on the Sphere

Spherical point pattern

Description

Make an object of class "s2pp" representing a point pattern over a region on the sphere (of class "s2region").

Usage

s2pp(coords, region = NULL, marks = NULL, ..., check = TRUE)

Arguments

coords	data.frame, matrix or list. Object containing spherical coordinates of the points. This must be either longitude and latitude in degrees or 3D Cartesian coordinates. In the former case two named columns or list entries are required. In the latter three colums or list entries are required and assumed to be in x, y, z order (disregarding any names).
region	Region on the sphere where the points occur. Object of class "s2region".
marks	Marks attached to the points.
...	Arguments passed on to s2 radius Numeric. Defaults to 1. For convenience this can also be an object of class "s2region" from where the radius and unitname then will be extracted. unitname Optional. Name of unit of length. Either a single character string, or a vector of two character strings giving the singular and plural forms, respectively.
check	Logical. Check that points actually are inside the provided region.

Value

Object of class "s2pp".

Examples

long <- c(90, 180, -90)
lat <- c(45, 0, -45)
coords <- data.frame(long, lat)
X <- s2pp(coords)

spatstat/spatstat.sphere documentation built on Jan. 27, 2023, 2:59 a.m.