Hi R Users
I am working with the very useful SNA package (v.2.2) in R and have a
query I hope you may be able to help out with:
I have been using gplot commands to plot an SNA graph. Here's the code
and output:
library(sna); library(network); library(RODBC)
setwd("c:\\temp")
x = read.csv(file = "testforr.csv")
Total.Sold=c(1,3,6,1,3,6,1,3,6,6,9)
src=c(1:10,1)
des=c(2:10,1,3)
y=data.frame(Total.Sold,src,des)
dat.edg <- network(y, directed = TRUE, matrix.type = "edgelist")
# Plot the network:
gplot(dat.edg, displaylabels = TRUE, label.cex = 0.9, arrowhead.cex =
0.9,
vertex.col = "red")
Is there any way you know of scaleing the size of the nodes in the
graph? I was hoping to scale the nodes according to their individual
betweeness score. Betweenness can be calculated for each node in the
example above, using:
betweenness (dat.edg)
# Giving the output:
[1] 4 0 3 0 0 0 0 0 3 0
Hope you can help ... many thanks,
tom
Thomas Rawdon, Incursion Investigator (Animals)
Investigation and Diagnostic Centre | Investigation Readiness and
Response
Ministry of Agriculture and Forestry | 66 Ward St, Wallaceville | PO
Box 40 742 | Upper Hutt | New Zealand
Telephone: 64-4-894 5607 | Facsimile: 64-4-894 4973| Mobile: 027 733
1795 | Email: thomas.raw...@maf.govt.nz | Web: www.maf.govt.nz
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