如何在Graphviz中左对齐节点？

Question

我正在尝试用graphviz显示数字电路网表。

我诉诸：

• 记录形状以表示输入/输出端口。
• rankdir = LR表示从左到右对齐

以下代码正常。但是，在布局期间，某些输入（此处为＆＃34; i3＆＃34;）可能未对齐：我希望i3左对齐，如i1和i2。

我该怎么做？

digraph G {
  graph [rankdir = LR];
  node[shape=record];
  c1[  label="{ {<i1>i1|<i2>i2}| c1 | {<f>f} }"];
  c2[  label="{ {<i0>i0}| c2 | {<out_0>out_0} }"];
  c3[  label="{ {<i0>i0}| c3 | {<out_0>out_0} }"];
  c4[  label="{ {<i0>i0|<i1>i1}| c4 | {<out_0>out_0} }"];
  i1;   i2;   i3;   f;   i1 -> c2:i0[ label="w(1)"];
  i2 -> c3:i0[ label="w(2)"];
  i3 -> c4:i1[ label="w(4)"];
  c1:f -> c4:i0[label="w(3)"];
  c2:out_0 -> c1:i1[label="w(5)"];
  c3:out_0 -> c1:i2[label="w(6)"];
  c4:out_0 -> f[label="w(7)"];
}

Answer 1

刚刚指定i1，i2和i3具有相同的等级：

digraph G {
  graph [rankdir = LR];
  node[shape=record];
  c1[  label="{ {<i1>i1|<i2>i2}| c1 | {<f>f} }"];
  c2[  label="{ {<i0>i0}| c2 | {<out_0>out_0} }"];
  c3[  label="{ {<i0>i0}| c3 | {<out_0>out_0} }"];
  c4[  label="{ {<i0>i0|<i1>i1}| c4 | {<out_0>out_0} }"];
  i1;   i2;   i3;   f;   i1 -> c2:i0[ label="w(1)"];
  i2 -> c3:i0[ label="w(2)"];
  i3 -> c4:i1[ label="w(4)"];
  c1:f -> c4:i0[label="w(3)"];
  c2:out_0 -> c1:i1[label="w(5)"];
  c3:out_0 -> c1:i2[label="w(6)"];
  c4:out_0 -> f[label="w(7)"];

  {rank=same; i1; i2; i3}
}