CODEWITHSUNDEEP
rshinyhtmlwidgetsnetworkd3
Shudharsanan
Shudharsanan

Reputation: 56

ColourScale ForceNetwork (NetworkD3) in R Shiny

In forcenetwork, i found group and colourscale to colour the node in a network. I would like to have 2 different groups(colour is applied to the node based on user input between 2 different variables). Is it possible to have it? If yes, how?

Forcenetwork - https://www.rdocumentation.org/packages/networkD3/versions/0.4/topics/forceNetwork

Any kind of help will be useful. Thanks!

Upvotes: 2

Views: 1020

Answers (1)

CJ Yetman
CJ Yetman

Reputation: 8848

The colourScale parameter determines the color palette, while the group parameter determines the name of the vector in your nodes data frame that contains values to distinguish the group of each node. networkD3 automatically chooses a unique color from the color palette for each distinct group in your data and applies that color to each node in that group.

library(networkD3)

links <- read.table(header = T, text = "
source  target  value
0       1       1
1       2       1
2       0       1
0       3       1
3       4       1
4       5       1
5       3       1
")

nodes <- read.table(header = T, text = "
name    group
zero    1
one     1
two     1
three   2
four    2
five    2
")

forceNetwork(Links = links, Nodes = nodes, 
             Source = "source", Target = "target", Value = "value", 
             NodeID = "name", Group = "group", 
             colourScale = JS("d3.scaleOrdinal(d3.schemeCategory10);"))

If you have two separate variables in your data that jointly determine the group of each node, you should combine them in your data before passing them to forceNetwork()...

nodes <- read.table(header = T, text = "
name    group1  group2
zero    A       D
one     B       E
two     C       F
three   A       E
four    B       F
five    C       D
")

nodes$group <- paste(nodes$group1, nodes$group2, sep = "_")

forceNetwork(Links = links, Nodes = nodes, 
             Source = "source", Target = "target", Value = "value", 
             NodeID = "name", Group = "group", 
             colourScale = JS("d3.scaleOrdinal(d3.schemeCategory10);"))

Upvotes: 1

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