diagrammeR - 改编自“如何在我的流程图中添加武器？”

Posted 2023-04-01

【中文标题】diagrammeR - 改编自“如何在我的流程图中添加武器？”

【英文标题】：diagrammeR - adaptation from "how can I add arms to my flowchart?"

【发布时间】：2021-12-17 05:50:35

【问题描述】：

我在这里找到了以下图表示例 (diagrammer - how can I add arms to my flowchart?)：

library(DiagrammeR)

grViz("digraph flowchart 
  # node definitions with substituted label text
  node [fontname = Helvetica, shape = rectangle, fixedsize = false, width = 1] 
  1 [label = 'data (100%)']
  2 [label = 'data  (74.4%)']
  3 [label = 'data  (69.6%)']
  4 [label = 'data  (55.4%)']
  m1 [label = 'missing (25.6%)']
  m2 [label = 'missing (4.8%)']

  node [shape=none, width=0, height=0, label='']
  p1 -> 2; p2 -> 3 -> 4;
  rank=same; p1 -> m1
  rank=same; p2 -> m2

  edge [dir=none]
  1 -> p1; 2 -> p2;
")

输出是：

在我的情况下，我在框 2 和 3 之间有多个排除项（m2、m3、m4、m5、m6、m7、m8）：

grViz("digraph flowchart 
  # node definitions with substituted label text
  node [fontname = Helvetica, shape = rectangle, fixedsize = false, width = 1] 
  1 [label = 'Box 1']
  2 [label = 'Box 2']
  3 [label = 'Box 3']
  m1 [label = 'm1']
  m2 [label = 'm2']
  m3 [label = 'm3']
  m4 [label = 'm4']
  m5 [label = 'm5']
  m6 [label = 'm6']
  m7 [label = 'm7']
  m8 [label = 'm8']
  
  node [shape=none, width=0, height=0, label='']
  p1 -> 2; p2 -> 3;
  rank=same; p1 -> m1
  rank=same; p2 -> m2
  rank=same; p2 -> m3
  rank=same; p2 -> m4
  rank=same; p2 -> m5
  rank=same; p2 -> m6
  rank=same; p2 -> m7
  rank=same; p2 -> m8      
  
  edge [dir=none]
  1 -> p1; 2 -> p2;
")

目前这给了我：

但我想在框 2 和 3 之间有一个更长的箭头，这样所有 m 框都在另一个下方，而不是向右，这可能吗？喜欢：

Box 2
  |--- m2
  |--- m3
  |--- m4
  |--- m5
  |--- m6
  |--- m7
  |--- m8
Box 3

【参考方案1】：

这应该可以让您启动并运行。只需添加更多（p3 -> p4... 在边缘部分等）。

library(DiagrammeR)
grViz("digraph flowchart 
  # node definitions with substituted label text
  node [fontname = Helvetica, shape = rectangle, fixedsize = false, width = 1] 
  1 [label = 'Box 1']
  2 [label = 'Box 2']
  3 [label = 'Box 3']

  m1 [label = 'm1']
  m2 [label = 'm2']
  m3 [label = 'm3']
  
  node [shape=none, width=0, height=0, label='']
  p1 -> 2; p3 -> 3
  rank=same; p1 -> m1
  rank=same; p2 -> m2
  rank=same; p3 -> m3
  
  edge [dir=none, arrowhead=none]
  1 -> p1; 2 -> p2; p2 -> p3
")

【讨论】：

谢谢布赖恩，完美！你知道有没有办法增加向右箭头的长度？

今天没时间测试，但看起来有一个 minlen 参数可能会有所帮助。 rich-iannone.github.io/DiagrammeR/graphviz_and_mermaid.html