forceNetwork is not zero indexed

Question

I am trying to create a simple forceNetwork, but the plot won\'t render. I keep getting the following warning:

Warning message: It looks like Sou

Answer 1

Since networkD3 uses javascript, you need to start your indexing at 0 and not 1 for links. Simply subtract 1 from your nodes/links to reindex:

links = links-1
nodes$name = nodes$name-1 #might want to re-index nodes, too
forceNetwork(Links=links,Nodes = nodes,
             Source = 'source', Target = 'target', 
             NodeID = 'name', Group = 'group')