netplot: make_colors – R documentation

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make_colors

Create a vector of colors for vertices and edges

Description

Using vertex/edge attributes, these functions return vectors of colors that can be used either during the creation of the nplot object, or afterwards when changing gpar (graphical parameter) values with set_gpar.

Usage

make_colors(dat, categorical = FALSE, color_map = grDevices::hcl.colors)

make_edges_colors(x, eattr, ...)

make_vertex_colors(x, vattr, ...)

Arguments

`dat`	A vector of data to generate the color from.
`categorical`	Logical. When `TRUE` sets the colors as categories.
`color_map`	A function to generate a palette.
`x`	A graph of class `network` or `igraph`.
`...`	Further arguments passed to `make_colors`.
`vattr, eattr`	Character. Names of either vertex or edge variables to be used for generating the colors.

Details

If no attribute is provided, then by defaul the colors are set according to indegree.

x can be either a graph of class igraph or network.

Value

A vector of colors with the attribute color_map. The color map used to generate the colors.

Examples

data(UKfaculty, package="igraphdata")
col <- make_vertex_colors(UKfaculty, "Group")

if (require(magrittr)) {

  nplot(UKfaculty) %>%
    set_vertex_gpar("core", fill = col, col=col) %>%
    set_vertex_gpar("frame", fill = col, col=col, alpha=.7) %>%
    set_edge_gpar(col="gray50", fill="gray50", alpha=.5)
}

netplot

Beautiful Graph Drawing

v0.1-1

MIT + file LICENSE

Authors

George Vega Yon [aut, cre] (<https://orcid.org/0000-0002-3171-0844>)

Initial release