is.in.data: Check a point belong to a given data set

In elvanceyhan/pcds: Proximity Catch Digraphs and Their Applications

Check a point belong to a given data set

Description

returns TRUE if the point p of any dimension is inside the data set Xp of the same dimension as p; otherwise returns FALSE.

Usage

is.in.data(p, Xp)

Arguments

p	A 2D point for which the function checks membership to the data set Xp.
Xp	A set of 2D points representing the set of data points.

Value

TRUE if p belongs to the data set Xp.

Author(s)

Elvan Ceyhan

Examples

## Not run: 
n<-10
Xp<-cbind(runif(n),runif(n))

P<-Xp[7,]
is.in.data(P,Xp)
is.in.data(P,Xp[7,])

P<-Xp[7,]+10^(-7)
is.in.data(P,Xp)

P<-Xp[7,]+10^(-9)
is.in.data(P,Xp)

is.in.data(P,P)

is.in.data(c(2,2),c(2,2))

#for 1D data
n<-10
Xp<-runif(n)

P<-Xp[7]
is.in.data(P,Xp[7])  #this works because both entries are treated as 1D vectors but
#is.in.data(P,Xp) does not work since entries are treated as vectors of different dimensions

Xp<-as.matrix(Xp)
is.in.data(P,Xp)
#this works, because P is a 1D point, and Xp is treated as a set of 10 1D points

P<-Xp[7]+10^(-7)
is.in.data(P,Xp)

P<-Xp[7]+10^(-9)
is.in.data(P,Xp)

is.in.data(P,P)

#for 3D data
n<-10
Xp<-cbind(runif(n),runif(n),runif(n))

P<-Xp[7,]
is.in.data(P,Xp)
is.in.data(P,Xp[7,])

P<-Xp[7,]+10^(-7)
is.in.data(P,Xp)

P<-Xp[7,]+10^(-9)
is.in.data(P,Xp)

is.in.data(P,P)

n<-10
Xp<-cbind(runif(n),runif(n))
P<-Xp[7,]
is.in.data(P,Xp)

## End(Not run)

elvanceyhan/pcds documentation built on June 29, 2023, 8:12 a.m.