问题 I have a nice graph with DiagrammeR in R studio, but the nodes are too clustered togather. I have searched everywhere but I cannot find a way of increasing the distance between them. Can I be shown? Here is my code: library(magrittr) library(DiagrammeR) # Create a simple NDF nodes <- create_nodes(nodes = c("Index", "Surveillance", "Intervention","Lost"), label = TRUE, fontsize=55, type = "lower", style = "filled", color = "aqua", shape = c("circle", "circle", "rectangle", "rectangle"), data =