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README.md

"arcdiagram"

arcdiagram is a minimalist package that provides a basic function to plot pretty arc diagrams in R

Installation

arcdiagram is only available in github (but not in CRAN). To install the development version, use install_github() from R package "devtools":

# install 'arcdiagram' (development version)
devtools::install_github('gastonstat/arcdiagram')

Some Examples

library(arcdiagram)

# create a star graph with 10 nodes
star_graph = graph.star(10, mode="out")

# extract edgelist
star_edges = get.edgelist(star_graph)

# inspect star_edges
star_edges

# plot 1: default arc diagram
arcplot(star_edges)

# plot 2: show nodes as circles, in decreasing order
arcplot(star_edges, show.nodes=TRUE, sorted=TRUE, decreasing=TRUE, las=1)

# plot 3: different ordering, arc widths, arc colors, and node sizes
set.seed(120)
arcplot(star_edges, ordering=sample(1:10), labels=paste("node",1:10,sep="-"),
   lwd.arcs=4*runif(10,.5,2), col.arcs=hsv(runif(9,0.6,0.8),alpha=0.4),
   show.nodes=TRUE, pch.nodes=21, cex.nodes=runif(10,1,3), 
   col.nodes="gray80", bg.nodes="gray90", lwd.nodes=2)
   
# plot 4: same as plot 3 but vertically oriented
set.seed(120)
op = par(mar = c(0.5, 5, 0.5, 3))
arcplot(star_edges, ordering=sample(1:10), horizontal=FALSE,
   labels=paste("node",1:10,sep="-"),
   lwd.arcs=4*runif(10,.5,2), col.arcs=hsv(runif(9,0.6,0.8),alpha=0.4),
   show.nodes=TRUE, pch.nodes=21, cex.nodes=runif(10,1,3), 
   col.nodes="gray80", bg.nodes="gray90", lwd.nodes=2)
par(op)

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