r - Diagrammer 无法在 R 中创建节点

Question

我目前有 R 版本 3.2.2，带有 DiagrammeR R 包。尝试运行以下代码时出现这两个错误:

library(DiagrammeR)
nodes <- create_nodes(nodes = seq(uniquenodes), 
                      type = "number", 
                      label = uniquenodes)

Error: could not find function "create_nodes"

edges <- create_edges(from = match(df$col1, uniquenodes), 
                      to = match(df$col2,uniquenodes), 
                      rel = "related")

Error: could not find function "create_edges"

Answer 1

下面的代码应该与 DiagrammeR 兼容0.9.0。该图的外观似乎与 DiagrammeR creates "wrong" diagram in R 中生成的图有所不同。 .我没玩过render_graph在 0.9.0 中非常多，所以我还不确定如何获得更早的外观。

df <- data.frame(col1 = c("Cat", "Dog", "Bird"),
                 col2 = c("Feline", "Canis", "Avis"),
                 stringsAsFactors = FALSE)
uniquenodes <- unique(c(df$col1, df$col2))

uniquenodes

library(DiagrammeR)

nodes <- create_node_df(n=length(uniquenodes), 
                        type="number", 
                        label=uniquenodes)
edges <- create_edge_df(from=match(df$col1, uniquenodes), 
                        to=match(df$col2, uniquenodes), 
                        rel="related")
g <- create_graph(nodes_df=nodes, 
                  edges_df=edges)
render_graph(g)