Issue: Error in PathAttr

[mweberr]

I run the sample code

library(ggraph)
library(igraph)
 graph <- graph_from_data_frame(highschool)
 
# Not specifying the layout - defaults to "auto"
ggraph(graph) + 
geom_edge_link(aes(colour = factor(year))) + 
geom_node_point()

Using nicely as default layout
Error in pathAttr(data, length(unique(data$group))) :
Not compatible with requested type: [type=character; target=integer].

RV 3.6.0
ggraph LATEST from devtools githutb

[mschubert]

For other people finding this via the search function:

This error also occurs with the current CRAN version of ggraph (1.0.2).

Fix is to install from devtools::install_github("thomasp85/ggraph") (or wait for the next release, I suppose)