emstreeR (version 2.1.0)

plot.MST: Plot method for 'MST' objects

Description

Plots a 2D Minimum Spanning Tree (MST) by producing a scatter plot with segments using the generic function plot.

Usage

# S3 method for MST
plot(x, ..., V1 = 1, V2 = 2, col.pts = "black",
  col.segts = "black", lty = 3)

Arguments

x

a MST class object returned by the ComputeMST function.

...

further graphical parameters.

V1

the numeric position or the name of the column to be used as the x coordinates of the points in the plot.

V2

the numeric position or the name of the column to be used as the y coordinates of the points in the plot.

col.pts

color of the points (vertices/nodes) in the plot.

col.segts

color of the segments (edges) in the plot.

lty

line type. An integer or name: 0 = "blank", 1 = "solid", 2 = "dashed", 3 = "dotted", 4 = "dotdash", 5 = "longdash", 6 = "twodash". The default for 'MST' objects is "dotted".

Examples

# NOT RUN {
## 2D artifical data
set.seed(1984)
n <- 15
c1 <- data.frame(x = rnorm(n,-0.2, sd=0.2), y = rnorm(n,-2,sd=0.2))
c2 <- data.frame(x = rnorm(n,-1.1, sd=0.15), y = rnorm(n,-2,sd=0.3)) 
c3 <- c(0.55,-2.4)
d <- rbind(c1, c2, c3)
d <- as.data.frame(d)

## MST:
out <- ComputeMST(d)
out

## 2D plot:
plot(out)

# using different parameters
plot(out, col.pts = "blue", col.segts = "red", lty = 2)

# }