标签不遵循边缘线

Question

我以前使用 graphviz 来处理更小的图，这次结构方程建模类型的图让我有些头疼。如果使用 spline=line，则图表顶部的标签似乎不遵循这些线。这在图表的顶部更为突出。

如何让标签与路径正确匹配？

digraph plot {

    
    graph [ fontsize = 10, splines=line, nodesep = 0.4];
    
    
    subgraph controls {
        rank = same
        node [shape = box];
            a; b; c; d; e; f;
    }
    
    node [shape = circle]
       G

    node [shape = box ];
        H; I; J; K; L; M; O; P
        
        
    edge [ color = black ]
        X -> G [label = "0.19***"]
        d->G [label = "0.06***"] 
        e->G [label = "-0.15***" color=red]
        a->X [label = "0.3***"] 
        b->X [X = "0.21***"] 
        c->X [label = "0.08***"]
        f->X [label = "-0.08***" color=red] 
        G->H [label = "0.85***"] 
        G->I [label = "0.89***"] 
        G->J [label = "0.76***"] 
        G->K [label = "0.85***"] 
        G->L [label = "0.74***"]
        G->M [label = "0.81***"] 
        G->O [label = "0.8***"]
        G->P [label = "0.76***"]
        a -> G [label = "-0.32***" color=red]
        b->G [label = "0.15***"]
        c->G [label = "0.06***"]
        f->G [label = "-0.12***" color=red]
        d->X [label = "0.06***"] 
        e->X [label = "-0.09***" color=red] 
        G->G [label= 1 ]
    
    subgraph central {
        rank = same
        node [shape = circle]
            G
        node [shape = box];
            X;
    }
    


}

结果：

p.s。也欢迎其他改进建议。

Answer 1

Graphviz 不提供跟随边缘曲线的边缘标签。有此功能的请求 (https://gitlab.com/graphviz/graphviz/-/issues/2007)。您可能会分享您的兴趣。
你的来源有几个次优
- G 被声明了两次 - 合法但不必要
- edge b->X 有一个 X 属性而不是标签。没什么大不了的

可能性：

考虑其他布局引擎。 circo 和 twopi 很有趣
增加nodesep
尝试 splines=true（这似乎真的有帮助）
将字体颜色与边缘颜色匹配
考虑删除 X 和 G 的 rank=same（同样，这似乎确实有帮助）
对于 a-f -> X，尝试使用 taillabel 而不是 label

这些更改中的大部分都是装饰性的，只是为了让我更容易理解。
一个不确定的变化是改变 G 和 X 排名。你来电。

digraph plot {
    graph [ fontsize = 10, splines=line, nodesep = 0.8];
    splines=true
    
    subgraph controls {
        rank = same
        node [shape = box];
            a; b; c; d; e; f;
    }
    subgraph central {
        //rank = same
        G [shape = circle]
        X [shape = box];
    }
    
    node [shape = box ];
        H; I; J; K; L; M; O; P
        
    edge [ color = black ]
        a->X [taillabel = "0.3***"] 
        b->X [taillabel = "0.21***"] 
        c->X [taillabel = "0.08***"  labelangle=-70]  // tweak
        f->X [taillabel = "-0.08***" color=red] 
        d->X [taillabel = "0.06***"] 
        e->X [taillabel = "-0.09***" color=red] 

        X->G [label = "0.19***"]
        d->G [label = "0.06***"] 
        e->G [label = "-0.15***" color=red]
        a->G [label = "-0.32***" color=red]
        b->G [label = "0.15***"]
        c->G [label = "0.06***"]
        f->G [label = "-0.12***" color=red]
        G->G [label= 1 ]
    
        G->H [label = "0.85***"] 
        G->I [label = "0.89***"] 
        G->J [label = "0.76***"] 
        G->K [label = "0.85***"] 
        G->L [label = "0.74***"]
        G->M [label = "0.81***"] 
        G->O [label = "0.8***"]
        G->P [label = "0.76***"]
}

给予：

标签不遵循边缘线

Labels not following edge lines

graphviz