Plot a network

Source: R/netplot.R

This is a description.

nplot(
  x,
  layout,
  vertex.size = 1,
  bg.col = "transparent",
  vertex.nsides = 10,
  vertex.color = grDevices::hcl.colors(1),
  vertex.size.range = c(0.01, 0.03, 4),
  vertex.frame.color = NULL,
  vertex.rot = 0,
  vertex.frame.prop = 0.2,
  vertex.label = NULL,
  vertex.label.fontsize = NULL,
  vertex.label.color = adjustcolor("black", alpha.f = 0.8),
  vertex.label.fontfamily = "sans",
  vertex.label.fontface = "plain",
  vertex.label.show = 0.3,
  vertex.label.range = c(5, 15),
  edge.width = 1,
  edge.width.range = c(1, 2),
  edge.arrow.size = NULL,
  edge.color = ~ego(alpha = 0.1, col = "gray") + alter,
  edge.curvature = pi/3,
  edge.line.lty = "solid",
  edge.line.breaks = 5,
  sample.edges = 1,
  skip.vertex = FALSE,
  skip.edges = FALSE,
  skip.arrows = skip.edges,
  add = FALSE,
  zero.margins = TRUE,
  edgelist
)

# S3 method for igraph
nplot(
  x,
  layout = igraph::layout_nicely(x),
  vertex.size = igraph::degree(x, mode = "in"),
  bg.col = "transparent",
  vertex.nsides = 10,
  vertex.color = grDevices::hcl.colors(1),
  vertex.size.range = c(0.01, 0.03, 4),
  vertex.frame.color = NULL,
  vertex.rot = 0,
  vertex.frame.prop = 0.2,
  vertex.label = igraph::vertex_attr(x, "name"),
  vertex.label.fontsize = NULL,
  vertex.label.color = adjustcolor("black", alpha.f = 0.8),
  vertex.label.fontfamily = "sans",
  vertex.label.fontface = "plain",
  vertex.label.show = 0.3,
  vertex.label.range = c(5, 15),
  edge.width = igraph::edge_attr(x, "weight"),
  edge.width.range = c(1, 2),
  edge.arrow.size = NULL,
  edge.color = ~ego(alpha = 0.1, col = "gray") + alter,
  edge.curvature = pi/3,
  edge.line.lty = "solid",
  edge.line.breaks = 5,
  sample.edges = 1,
  skip.vertex = FALSE,
  skip.edges = FALSE,
  skip.arrows = !igraph::is_directed(x),
  add = FALSE,
  zero.margins = TRUE,
  edgelist
)

# S3 method for network
nplot(
  x,
  layout = sna::gplot.layout.kamadakawai(x, NULL),
  vertex.size = sna::degree(x, cmode = "indegree"),
  bg.col = "transparent",
  vertex.nsides = 10,
  vertex.color = grDevices::hcl.colors(1),
  vertex.size.range = c(0.01, 0.03, 4),
  vertex.frame.color = NULL,
  vertex.rot = 0,
  vertex.frame.prop = 0.2,
  vertex.label = network::get.vertex.attribute(x, "vertex.names"),
  vertex.label.fontsize = NULL,
  vertex.label.color = adjustcolor("black", alpha.f = 0.8),
  vertex.label.fontfamily = "sans",
  vertex.label.fontface = "plain",
  vertex.label.show = 0.3,
  vertex.label.range = c(5, 15),
  edge.width = 1,
  edge.width.range = c(1, 2),
  edge.arrow.size = NULL,
  edge.color = ~ego(alpha = 0.1, col = "gray") + alter,
  edge.curvature = pi/3,
  edge.line.lty = "solid",
  edge.line.breaks = 5,
  sample.edges = 1,
  skip.vertex = FALSE,
  skip.edges = FALSE,
  skip.arrows = !network::is.directed(x),
  add = FALSE,
  zero.margins = TRUE,
  edgelist
)

# S3 method for matrix
nplot(
  x,
  layout,
  vertex.size = 1,
  bg.col = "transparent",
  vertex.nsides = 10,
  vertex.color = grDevices::hcl.colors(1),
  vertex.size.range = c(0.01, 0.03, 4),
  vertex.frame.color = NULL,
  vertex.rot = 0,
  vertex.frame.prop = 0.2,
  vertex.label = NULL,
  vertex.label.fontsize = NULL,
  vertex.label.color = adjustcolor("black", alpha.f = 0.8),
  vertex.label.fontfamily = "sans",
  vertex.label.fontface = "plain",
  vertex.label.show = 0.3,
  vertex.label.range = c(5, 15),
  edge.width = 1,
  edge.width.range = c(1, 2),
  edge.arrow.size = NULL,
  edge.color = ~ego(alpha = 0.1, col = "gray") + alter,
  edge.curvature = pi/3,
  edge.line.lty = "solid",
  edge.line.breaks = 5,
  sample.edges = 1,
  skip.vertex = FALSE,
  skip.edges = FALSE,
  skip.arrows = skip.edges,
  add = FALSE,
  zero.margins = TRUE,
  edgelist
)

# S3 method for default
nplot(
  x,
  layout,
  vertex.size = 1,
  bg.col = "transparent",
  vertex.nsides = 10,
  vertex.color = grDevices::hcl.colors(1),
  vertex.size.range = c(0.01, 0.03, 4),
  vertex.frame.color = NULL,
  vertex.rot = 0,
  vertex.frame.prop = 0.2,
  vertex.label = NULL,
  vertex.label.fontsize = NULL,
  vertex.label.color = adjustcolor("black", alpha.f = 0.8),
  vertex.label.fontfamily = "sans",
  vertex.label.fontface = "plain",
  vertex.label.show = 0.3,
  vertex.label.range = c(5, 15),
  edge.width = 1,
  edge.width.range = c(1, 2),
  edge.arrow.size = NULL,
  edge.color = ~ego(alpha = 0.1, col = "gray") + alter,
  edge.curvature = pi/3,
  edge.line.lty = "solid",
  edge.line.breaks = 5,
  sample.edges = 1,
  skip.vertex = FALSE,
  skip.edges = FALSE,
  skip.arrows = skip.edges,
  add = FALSE,
  zero.margins = TRUE,
  ...,
  edgelist
)

# S3 method for netplot
print(x, y = NULL, newpage = TRUE, legend = TRUE, ...)

Arguments

x

A graph. It supports networks stored as igraph, network, and matrices objects (see details).
layout

Numeric two-column matrix with the graph layout in x/y positions of the vertices.
vertex.size

Numeric vector of length vcount(x). Absolute size of the vertex from 0 to 1.
bg.col

Color of the background.
vertex.nsides

Numeric vector of length vcount(x). Number of sizes of the vertex. E.g. three is a triangle, and 100 approximates a circle.
vertex.color

Vector of length vcount(x). Vertex HEX or built in colors.
vertex.size.range

Numeric vector of length 3. Relative size for the minimum and maximum of the plot, and curvature of the scale. The third number is used as size^rel[3].
vertex.frame.color

Vector of length vcount(x). Border of vertex in HEX or built in colors.
vertex.rot

Vector of length vcount(x) in Radians. Passed to npolygon, elevation degree from which the polygon is drawn.
vertex.frame.prop

Vector of length vcount(x). What proportion of the vertex does the frame occupy (values between 0 and 1).
vertex.label

Character vector of length vcount(x). Labels.
vertex.label.fontsize

Numeric vector.
vertex.label.color

Vector of colors of length vcount(x).
vertex.label.fontfamily

Character vector of length vcount(x).
vertex.label.fontface

See grid::gpar
vertex.label.show

Numeric scalar. Proportion of labels to show as the top ranking according to vertex.size.
vertex.label.range

Numeric vector of size 2 or 3. Relative scale of vertex.label.fontsize in points (see grid::gpar).
edge.width

Vector of length ecount(x) from 0 to 1. All edges will be the same size.
edge.width.range

Vector of length ecount(x) from 0 to 1. Adjusting width according to weight.
edge.arrow.size

Vector of length ecount(x) from 0 to 1.
edge.color

A vector of length ecount(x). In HEX or built in colors. Can be NULL in which case the color is picked as a mixture between ego and alters' vertex.color values.
edge.curvature

Numeric vector of length ecount(x). Curvature of edges in terms of radians.
edge.line.lty

Vector of length ecount(x). Line types in R (e.g.- 1 = Solid, 2 = Dashed, etc).
edge.line.breaks

Vector of length ecount(x). Number of vertices to draw (approximate) the arc (edge).
sample.edges

Numeric scalar between 0 and 1. Proportion of edges to sample.
skip.vertex, skip.edges, skip.arrows

Logical scalar. When TRUE the object is not plotted.
add

Logical scalar.
zero.margins

Logical scalar.
edgelist

An edgelist.
y, ...

Ignored
newpage

Logical scalar. When TRUE calls grid::grid.newpage.
legend

Logical scalar. When TRUE it adds a legend.

Value

An object of class c("netplot", "gTree", "grob", "gDesc"). The object has an additional set of attributes:

  • .xlim, .ylim vector of size two with the x-asis/y-axis limits.

  • .layout A numeric matrix of size vcount(x) * 2 with the vertices positions

  • .edgelist A numeric matrix, The edgelist.

In the case of nplot.default, an object of class netplot and grob (see grid::grob) with the following slots:

  • children The main grob of the object.

  • name Character scalar. The name of the plot

  • .xlim and .ylim Two vectors indicating the limits of the plot

  • .layout A two-column matrix with the location of the vertices.

  • .edgelist A two-column matrix, an edgelist.

  • .N Integer. The number of vertices.

  • .M Integer. The number of edges.

The children grob contains the following two objects:

  • background a grob rectangule.

  • graph a gTree that contains each vertex and each edge of the figure.

Details

When x is of class matrix, it will be passed to igraph::graph_from_adjacency_matrix().

In the case of edge.color, the user can specify colors using netplot-formulae.

See also

nplot_base

Examples

library(igraph)
library(netplot)
set.seed(1)
x <- sample_smallworld(1, 200, 5, 0.03)

plot(x) # ala igraph

nplot(x) # ala netplot