forceNetwork not displaying, no code errors returned

4
votes

I am creating a networkD3 forceNetwork(), but after I cleared my env vars in RStudio the network would not display in my browser when I ran the code a second time. Any idea why? No code errors. Var output is below.

library(networkD3)
library(igraph)
setwd("C:\\Users\\King\\Desktop\\SNA_Rcode")
csv<-read.csv("C:\\Users\\King\\Desktop\\Analysis\\mc_with_0_and_MI.csv")

df<-data.frame(csv$stat.deaths,csv[,4],csv$stat.mob)#damage delt on deaths, mob kills (is color)
#2 mode. interactive model
#g1 <- simpleNetwork(df) ; htmltools::html_print(g1, viewer = utils::browseURL)#DISPLAYS CORRECTLY
df <- df[!duplicated(df[,2]),]
df[,2] <- paste("", df[,2], sep="")
#setup
g <- graph.data.frame(df,directed=F)
links<-as.data.frame(get.edgelist(g)) #set name to number so calculate link correctly
links$V1<-as.numeric(as.character(links$V1))
links$V2<-as.numeric(as.character(links$V2))
colnames(links)<-c("source","target")
link_list<-(links-1)
#######################DOESNT WORK LIKE EXPECTED......replaces NA with 2 instead of 999
color_groups<-df[,3]# color based on mob kills
color_groups <- ifelse(as.numeric(color_groups) < 10, 1, 
                       ifelse(as.numeric(color_groups) >= 30, 3, 2))
color_groups[is.na(color_groups)]<-999 #replace NA with 999

names<-0:(length(color_groups)-1)
node_list <- data.frame(name=names, group=color_groups)

profanity<-forceNetwork(Links = link_list, Nodes = node_list,Source = "source", Target = "target", NodeID = "name",Group = "group", opacity = 0.8, colourScale = "d3.scale.category10()",charge=-100)
htmltools::html_print(profanity, viewer = utils::browseURL)

After running all the above code (with a clear env):

    > head(link_list,20)
       source target
    1       6   1169
    2       1    839
    3       1   2594
    4       7   5409
    5      11   2719
    6       5   1719
    7       7    179
    8       2   1989
    9       4   3444
    10      0   2249
    11      1   1964
    12      0   3344
    13      6   4479
    14      6   2224
    15      7   3869
    16      5   2459
    17      3   1704
    18     -1   2479
    19      5   3494
    20      4   1869

> head(node_list,20)
   name group
1     0     2
2     1     1
3     2     2
4     3     3
5     4     1
6     5     2
7     6     1
8     7     2
9     8     2
10    9     2
11   10     1
12   11     2
13   12     2
14   13     2
15   14     2
16   15     2
17   16     2
18   17     2
19   18     2
20   19     2
3
rd3.jsnetworkd3
I'm looking for people to help me get this into a function, that we could maybe push to igraph or the forceNetwork people. github.com/gregmacfarlane/forceGraph/tree/master - gregmacfarlane

3 Answers

4
votes

I needed to set the names for the vertices using:

V(g)$name<-1:104

after I initialized the graph (g)

0
votes

Your link_list$source and link_list$target vectors appear to include indexes that are not in your node_list, e.g. -1 and 2249... or the values in those vectors are not what they are supposed to be...

The source and target vectors in the Links data frame must be numeric, and their values refer to the index of the node in the Nodes data frame which they represent (zero-indexed, unlike R, because it's used by the JavaScript code).

0
votes

I had the same issue in which forceNetwork ran fine with no issue but found a different cause in my case -
My Links dataframe had been filtered and its IDs were no longer consecutive. For example, an ID list of 0, 1, 2, 3, 10, 11, 12 will not work. It must be 0, 1, 2, 3, 4, 5, 6