CODEWITHSUNDEEP
rnetwork-programmingigraph
GW97
GW97

Reputation: 91

How to change the colour of nodes?

I'm trying to change the colour of the nodes dependent upon the month. At the moment, I've done it this way which isn't concise at all and wouldn't work for large datasets. Is there a better way of doing it?

Data <- read.csv(.....) 

library(igraph)   

MartixData <- as.matrix(Data)

NetworkData <- graph.adjacency(MatrixData, mode="directed", weighted=TRUE)

V(NetworkData)

V(NetworkData)$month <- c("June", "July", "July", "February", "September", "June", "September", "June", "December", "September", "March", "April", "September")

plot(NetworkData, layout=layout.circle, vertex.color=c("yellow", "red", "red", "blue", "pink","yellow", "pink", "yellow", "gray", "pink", "black", "orange", "pink"))

Any help would be much appreciated!

#Results for dput(NetworkData)
structure(list(13, TRUE, 
  c(0, 1, 1, 2, 5, 6, 7, 7, 8, 9, 10, 10, 12, 12, 12, 12, 12), 
  c(11, 4, 12, 0, 12, 1, 6, 12, 1, 4, 9, 12, 1, 5, 7, 10, 11), 
  c(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16), 
  c(3, 5, 8, 12, 1, 9, 13, 6, 14, 10, 15, 0, 16, 2, 4, 7, 11), 
  c(0, 1, 3, 4, 4, 4, 5, 6, 8, 9, 10, 12, 12, 17), 
  c(0, 1, 4, 4, 4, 6, 7, 8, 9, 9, 10, 11, 13, 17), 
  list(c(1, 0, 1), structure(list(), .Names = character(0)), 
 structure(list(name = c("A", "B", "C", "D", "E", "F", 
    "G", "H", "I", "J", "K", "L", "M"), month = c("June", 
    "July", "July", "February", "September", "June", "September", 
    "June", "December", "September", "March", "April", "September"
    )), .Names = c("name", "month")), structure(list(weight = c(6, 
    6, 7, 6, 7, 6, 6, 7, 7, 7, 6, 7, 7, 7, 7, 7, 7)), .Names = "weight"))), class = "igraph")

Upvotes: 4

Views: 1985

Answers (1)

zx8754
zx8754

Reputation: 56004

Use lookup dictionary for colours and assign it to vertex colour.

myCols <- setNames(c("yellow", "red", "blue", "pink", "gray", "black", "orange"),
                   c("June", "July", "February", "September", "December", "March", "April"))

# assign a colour for vertex
V(NetworkData)$color <- myCols[V(NetworkData)$month]

# then plot, no need to use "vertex.color="
plot(NetworkData, layout = layout.circle)

enter image description here

Upvotes: 2

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