surveillance: intersectPolyCircle – R documentation

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intersectPolyCircle

Intersection of a Polygonal and a Circular Domain

Description

This is a unifying wrapper around functionality of various packages dealing with spatial data. It computes the intersection of a circular domain and a polygonal domain (whose class defines the specific method).

Usage

intersectPolyCircle(object, center, radius, ...)

## S3 method for class 'owin'
intersectPolyCircle(object, center, radius, npoly = 32, ...)
## S3 method for class 'SpatialPolygons'
intersectPolyCircle(object, center, radius, npoly = 32, ...)
## S3 method for class 'gpc.poly'
intersectPolyCircle(object, center, radius, npoly = 32,
                   useGEOS = FALSE, ...)

Arguments

`object`	a polygonal domain of one of the supported classes.
`center,radius,npoly`	see `discpoly`.
`useGEOS`	logical indicating if package rgeos (`gIntersection`) should be used instead of package gpclib. The latter (default) requires explicit acceptance of gpclib's restricted license via `surveillance.options(gpclib=TRUE)`.
`...`	potential further arguments (from the generic).

Value

a polygonal domain of the same class as the input object.

Author(s)

Sebastian Meyer

Examples

library("spatstat.geom")
plot(letterR)
plot(intersectPolyCircle(letterR, c(3,2), 1), add=TRUE, col=2, lwd=3)

surveillance

Temporal and Spatio-Temporal Modeling and Monitoring of Epidemic Phenomena

v1.19.1

GPL-2

Authors

Michael H<f6>hle [aut, ths] (<https://orcid.org/0000-0002-0423-6702>), Sebastian Meyer [aut, cre] (<https://orcid.org/0000-0002-1791-9449>), Michaela Paul [aut], Leonhard Held [ctb, ths], Howard Burkom [ctb], Thais Correa [ctb], Mathias Hofmann [ctb], Christian Lang [ctb], Juliane Manitz [ctb], Andrea Riebler [ctb], Daniel Saban<e9>s Bov<e9> [ctb], Ma<eb>lle Salmon [ctb], Dirk Schumacher [ctb], Stefan Steiner [ctb], Mikko Virtanen [ctb], Wei Wei [ctb], Valentin Wimmer [ctb], R Core Team [ctb] (A few code segments are modified versions of code from base R)

Initial release

2021-03-30