Make it easier to specify edge capping relative to scaled size of node points

[thomasp85]

No idea how to achieve this but would be nice

[schochastics]

If anyone is looking for a workaround, here is what I do. Not sure if it is the best way, but it works.

library(igraph)
library(ggraph)

g <- make_graph(c(1,2,2,3))
V(g)$size <- c(1,5,15)
E(g)$esize <- V(g)$size[get.edgelist(g)[,2]]+2

ggraph(g,x=c(0,1,2),y=c(0,0,0))+
  geom_edge_link(end_cap=circle(rep(E(g)$esize,3),"points"),
                  arrow=arrow(angle = 10, length = unit(0.25, "inches"),ends = "last", type = "closed"),n=2)+
  geom_node_point(size=V(g)$size,shape=21,stroke=1,colour="red")+
  scale_x_continuous(limits=c(-1,3))+
  theme_graph()+
  theme(legend.position = "none")

[thomasp85]

Yeah, that's the thing... I thing that is the only way to do it consistently now, but it circumvent scaling completely and sort of hacks how you style points (plus the code is quite cumbersome)...

As I said I don't have any solution, but I would really like one

[malcolmbarrett]

Going to bump this issue since you're working on ggraph and this feature would be particularly beneficial for ggdag :)