防止graphviz重新排列节点

Question

我正在尝试使用graphviz可视化树结构,问题是随着图形变大,graphviz开始重新排列节点的顺序.说我有以下,

  A
/ | \
B C D

它成为了,

  A
/ | \
B D C

它可能这样做是为了节省空间,但在我的上下文节点的顺序,我尝试添加,

graph [ordering="out"];

但它没有改变输出.

编辑:

digraph bt {
graph [ordering="out"];
node [style="rounded", shape=box]
N_2386 -> N_2387
N_2387 -> N_2388
N_2388 -> N_2389
N_2388 -> N_2390
N_2387 -> N_2391
N_2386 -> N_2392
subgraph cluster_2393 {
labeljust = "l";
style=dashed;color="#B0B0B0"
N_2392 -> N_2394
N_2394 -> N_2395
N_2395 -> N_2396
N_2396 -> N_2397
N_2397 -> N_2398
N_2397 -> N_2399
N_2396 -> N_2400
N_2400 -> N_2401
N_2400 -> N_2402
N_2395 -> N_2403
N_2403 -> N_2404
N_2404 -> N_2405
N_2405 -> N_2406
N_2403 -> N_2407
N_2407 -> N_2408
N_2408 -> N_2409
N_2409 -> N_2410
N_2410 -> N_2411
N_2411 -> N_2412
N_2412 -> N_2413
N_2412 -> N_2414
N_2412 -> N_2415
N_2411 -> N_2416
N_2416 -> N_2417
N_2416 -> N_2418
N_2416 -> N_2419
N_2408 -> N_2420
N_2408 -> N_2421
N_2403 -> N_2422
N_2395 -> N_2423
N_2392 -> N_2424
}
}

问题图我需要的是,N_2387应该在右边N_2392应该在左边.这是我插入它们的顺序.

Answer 1

我尝试了以下内容

digraph g {
  ordering=out ;
  node [shape=box] ;

  a -> b ;  a -> c ;  a -> d ;  a -> e ;  a -> f ;
  a -> g ;  a -> h ;  a -> i ;  a -> j ;  a -> k ;
  a -> l ;  a -> m ;  a -> n ;  a -> o ;  a -> p ;
  a -> q ;  a -> r ;  a -> s ;  a -> t ;  a -> u ;
  a -> v ;  a -> w ;  a -> x ;  a -> y ;  a -> z ;
}

和所有节点b- z按正确顺序位于同一级别.你用的是什么版本？

Answer 2

如果您想控制特定项目的排序，请使用它们之间的隐形边缘。将此与rank指令相结合，可以为您提供很多控制权。

例如：这是来自 Graphviz的示例tagcloud布局：

/*
Using a graph and relationships just to push things onto different lines.
Two layout rules:
1) all items on a given line go into a "rank=same" phrase 
2) a relationship is needed between the first word on each line and the next line down to
   force the vertical alignment.
*/
digraph {
    edge[style=invisible]
    node[shape=none]

    fred [fontsize=18]
    harry [fontsize=8]
    jack [fontsize=12]
    sally [fontsize=12]
    mika
    amy
    jan
    jack -> fred
    fred -> mika
    {rank=same;fred;harry}
    {rank=same;mika amy; jan}
}