plotnet: Network plotting function

In MartinLHazelton/transportation: What the Package Does (One Line, Title Case)

Network plotting function

Description

This function plots traffic networks, where the relative locations of nodes are meaningful (unlike conceptual networks).

Usage

plotnet(
  nodes.x,
  nodes.y,
  link.node.matrix,
  radius = 1/2,
  link.sep = 1/12,
  link.label.offset = 0.4,
  LABEL.CEX = 1,
  ARROW.LENGTH = 0.4,
  ARR.TYPE = "triangle",
  node.label = TRUE,
  LINK.LABEL = TRUE,
  RightAbove = F,
  link.lty = 1,
  link.col = 1,
  node.lwd = 2
)

Arguments

nodes.x	Vector of x-coordinates for node locations
nodes.y	Vector of y-coordinates for node locations
link.node.matrix	Two column matrix specifying nodes of origin and destination for each link
radius	Radius of circles marking node locations. Defaults to 0.5.
link.sep	Angular separation (as a fraction of pi radians) of entry/exit positions of bi-directional links. Defaults to 1/12.
link.label.offset	Controls position of link labels relative to link. Detauls to 0.4.
LABEL.CEX	Character expansion factor for link labels. Defaults to 1.
ARROW.LENGTH	Controls length of arrow heads. Defaults to 0.4.
ARR.TYPE	Controls appearance of arrow heads in Arrows function. Defaults to "triangle".
node.label	Label nodes? Defaults to TRUE.
LINK.LABEL	Label links? Defaults to TRUE.
RightAbove	Further control for link label positions. Defaults to FALSE, which means that labels appear to left looking in direction of arrows. If TRUE, labels appear to the left/above links.
link.lty	Line type for links: single value, or vector (lty per link). Defaults to 1.
link.col	Line type for links: single value, or vector (lty per link). Defaults to 1 (black).
node.lwd	Line width for nodes: single value, or vector (lty per nodes). Defaults to 2.

Value

Produces a plot of the network

Examples

nodes.x <- c(2,7,12,2,7,12)
nodes.y <- c(7,7,7,2,2,2)
link.node.matrix <- rbind(c(1,2),c(1,4),c(2,5),c(3,2),c(3,6),c(4,5),c(6,5))
plotnet(nodes.x,nodes.y,link.node.matrix,ARROW.LENGTH=0.3,link.sep=0,radius=0.7,RightAbove=T)

MartinLHazelton/transportation documentation built on Aug. 5, 2023, 10:28 a.m.