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Edge-width scale

Source: R/scales.R
scale_edge_width.Rd

Declare the scale for a mapped edge linewidth aesthetic (e.g. mark_edges(linewidth = weight) on a vgraph() plot). The data range is rescaled to a line-width range and an edge-width legend is drawn automatically.

Usage

scale_edge_width(
  plot,
  range = c(0.3, 3),
  limits = NULL,
  breaks = NULL,
  name = NULL
)

Arguments

plot

A PlotSpec.

range

Output line-width range c(min, max).

limits

Data limits c(min, max), or NULL to train from the data.

breaks

Explicit legend breaks, or NULL.

name

Legend title, or NULL to derive from the encoding.

Value

The modified PlotSpec.

See also

mark_edges(), vgraph()

Examples

if (FALSE) { # \dontrun{
g <- igraph::sample_gnp(20, 0.2)
g <- igraph::set_edge_attr(g, "w", value = runif(igraph::ecount(g)))
vgraph(g) |> mark_edges(linewidth = w) |> mark_nodes() |> scale_edge_width(range = c(0.3, 4))
} # }