Re: [graphviz-interest] How can I align nodes horizontally when rankdir=LR in graphviz

Thanks, John Ellson!  The weight option works well and I get a better
understanding of it.

Weight of edge. In dot, the heavier the weight, the shorter,
straighter and *more
vertical *the edge is.



2014-05-31 1:49 GMT+08:00 John Ellson <[email protected]>:

>  Huangyg
>
> Try adding a weighted invisible edges to encourage the alignment you are
> looking for:
>
>
>                 { edge [style=invis weight=100; i0->i1->i8->i12 }
>
>
> John
>
> (modified graph attached.)
>
>
>
>
> On 05/30/2014 10:06 AM, 黄雅冠 wrote:
>
>  Hi, everyone!
>
> I have ask the same question on stack overflow
> <http://stackoverflow.com/questions/23929074/how-can-i-align-nodes-horizontally-when-rankdir-lr-in-graphviz>.
> But I have not get any answer there. Maybe I ask in the wrong place. I
> decide to try again here.
>
> I am struggling with a graph, hoping to align nodes, but this seems to be
> difficult. My current code (attach at the last) generate the follow graph
> or see this link <http://ge.tt/3LlXw8i1/v/0?c?c>.
>
> [image: Graphviz output]
>
> First, I want the I0, I1, I8, I12 to align horizontally. Does it have to
> use subgraph to wrap up some nodes? If it does, how? I have tried wrap I0,
> I1 nodes and the edge from I0 to I1 with a subgraph for a test. But that
> didn’t make much change.
>
> Secondly, can the self-loop in I5 look more elegant like the self-loop in
> I4 but not at the top of the node. I only find portpos option. If the node
> is a circle, the portpos option is enough. But it looks strange with
> rectangle.
>
> Thanks!
>
> —by huangyg
>
> digraph{
> rankdir=LR;
> ratio=auto
> node[shape=rectangle];
>
> i0[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="2">
>                 I<sub>0</sub>:
>             </TD>
>             <TD align="left">
>                 S'→.bexpr<BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>         <TR>
>             <TD align="left" bgcolor="#aaaaaa">
>                 bexpr→.bexpr or bterm <BR ALIGN="LEFT"/>
>                 bexpr→.bterm <BR ALIGN="LEFT"/>
>                 bterm→ .bterm and bfactor <BR ALIGN="LEFT"/>
>                 bterm→.bfactor <BR ALIGN="LEFT"/>
>                 bfactor→.not bfactor <BR ALIGN="LEFT"/>
>                 bfactor→.(bexpr) <BR ALIGN="LEFT"/>
>                 bfactor→.true <BR ALIGN="LEFT"/>
>                 bfactor→.false <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> i1[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top">
>                 I<sub>1</sub>:
>             </TD>
>             <TD align="left">
>                 S'→bexpr. <BR ALIGN="LEFT"/>
>                 bexpr→bexpr .or bterm <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> i2[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="1">
>                 I<sub>2</sub>:
>             </TD>
>             <TD align="left">
>                 bexpr→bterm. <BR ALIGN="LEFT"/>
>                 bterm→bterm .and bfactor <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> i3[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="1">
>                 I<sub>3</sub>:
>             </TD>
>             <TD align="left">
>                 bterm→bfactor.<BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> i4[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="2">
>                 I<sub>4</sub>:
>             </TD>
>             <TD align="left">
>                 bfactor→not .bfactor <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>         <TR>
>             <TD align="left" bgcolor="#aaaaaa">
>                 bfactor→.not bfactor <BR ALIGN="LEFT"/>
>                 bfactor→.(bexpr) <BR ALIGN="LEFT"/>
>                 bfactor→.true <BR ALIGN="LEFT"/>
>                 bfactor→.false <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
> i5[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="2">
>                 I<sub>5</sub>:
>             </TD>
>             <TD align="left">
>                 bfactor→(.bexpr) <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>         <TR>
>             <TD align="left" bgcolor="#aaaaaa">
>                 bexpr→.bexpr or bterm <BR ALIGN="LEFT"/>
>                 bexpr→.bterm <BR ALIGN="LEFT"/>
>                 bterm→.bterm and bfactor <BR ALIGN="LEFT"/>
>                 bterm→.bfactor <BR ALIGN="LEFT"/>
>                 bfactor→.not bfactor <BR ALIGN="LEFT"/>
>                 bfactor→.(bexpr) <BR ALIGN="LEFT"/>
>                 bfactor→.true <BR ALIGN="LEFT"/>
>                 bfactor→.false <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> i6[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="1">
>                 I<sub>6</sub>:
>             </TD>
>             <TD align="left">
>                  bfactor→true.<BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> i7[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="1">
>                 I<sub>7</sub>:
>             </TD>
>             <TD align="left">
>                 bfactor→false. <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> i8[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="2">
>                 I<sub>8</sub>:
>             </TD>
>             <TD align="left">
>                 bexpr→bexpr or .bterm  <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>         <TR>
>             <TD align="left" bgcolor="#aaaaaa">
>                 bterm→ .bterm and bfactor  <BR ALIGN="LEFT"/>
>                 bterm→.bfactor  <BR ALIGN="LEFT"/>
>                 bfactor→.not bfactor  <BR ALIGN="LEFT"/>
>                 bfactor→.(bexpr)  <BR ALIGN="LEFT"/>
>                 bfactor→.true  <BR ALIGN="LEFT"/>
>                 bfactor→.false  <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> i9[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="2">
>                 I<sub>9</sub>:
>             </TD>
>             <TD align="left">
>                 bterm→ bterm and .bfactor <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>         <TR>
>             <TD align="left" bgcolor="#aaaaaa">
>                 bfactor→.not bfactor <BR ALIGN="LEFT"/>
>                 bfactor→.(bexpr) <BR ALIGN="LEFT"/>
>                 bfactor→.true <BR ALIGN="LEFT"/>
>                 bfactor→.false <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> i10[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="1">
>                 I<sub>10</sub>:
>             </TD>
>             <TD align="left">
>                 bfactor→not bfactor. <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> i11[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="1">
>                 I<sub>11</sub>:
>             </TD>
>             <TD align="left">
>                 bfactor→(bexpr.) <BR ALIGN="LEFT"/>
>                 bexpr→bexpr .or bterm <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> i12[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="1">
>                 I<sub>12</sub>:
>             </TD>
>             <TD align="left">
>                     bexpr→bexpr or bterm. <BR ALIGN="LEFT"/>
>                     bterm→ bterm .and bfactor <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> i13[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="1">
>                 I<sub>13</sub>:
>             </TD>
>             <TD align="left">
>                 bterm→ bterm and bfactor. <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> i14[label=<
>     <TABLE border="0">
>         <TR>
>             <TD valign="top" rowspan="1">
>                 I<sub>14</sub>:
>             </TD>
>             <TD align="left">
>                 bfactor→(bexpr). <BR ALIGN="LEFT"/>
>             </TD>
>         </TR>
>     </TABLE>
> >];
>
> node[width=0.15,shape=none,fixedsize=false];
> i2_1[label=<I<sub>2</sub>>];
> i3_1[label=<I<sub>3</sub>>];
> i3_2[label=<I<sub>3</sub>>];
> i4_2[label=<I<sub>4</sub>>];
> i4_3[label=<I<sub>4</sub>>];
> i4_3[label=<I<sub>4</sub>>];
> i5_1[label=<I<sub>5</sub>>];
> i5_3[label=<I<sub>5</sub>>];
> i5_4[label=<I<sub>5</sub>>];
> i6_1[label=<I<sub>6</sub>>];
> i6_2[label=<I<sub>6</sub>>];
> i6_3[label=<I<sub>6</sub>>];
> i6_4[label=<I<sub>6</sub>>];
> i7_1[label=<I<sub>7</sub>>];
> i7_2[label=<I<sub>7</sub>>];
> i7_3[label=<I<sub>7</sub>>];
> i7_4[label=<I<sub>7</sub>>];
> i8_1[label=<I<sub>8</sub>>];
> i9_1[label=<I<sub>9</sub>>];
>
> i0 -> i1 [label ="bexpr"];
> i0 -> i2 [label = "bterm"];
> i0 -> i3 [label = "bfactor"];
> i0 -> i4 [label = "not"];
> i0 -> i5 [label = "("];
> i0 -> i6 [label = "true"];
> i0 -> i7 [label = "false"];
> i1 -> i8 [label = "or"];
> i2 -> i9 [label = "and"];
> i4 -> i10 [label = "bfactor"];
> i4 -> i4 [label = "not",weight=1];
> i4 -> i5_1 [label = "("];
> i4 -> i6_1 [label = "true"];
> i4 -> i7_1 [label = "false"];
> i5 -> i11 [label = "bexpr"];
> i5 -> i2_1 [label ="bterm"];
> i5 -> i3_1 [label = "bfactor"];
> i5 -> i4_2 [label = "not"];
> i5:sw -> i5:_ [label = "("];
> i5 -> i6_2 [label = "true"];
> i5 -> i7_2 [label = "false"];
> i8 -> i12 [label = "bterm"];
> i8 -> i3_2 [label = "bfactor"];
> i8 -> i4_3 [label = "not"];
> i8 -> i5_3 [label = "("];
> i8 -> i6_3 [label = "true"];
> i8 -> i7_3 [label = "false"];
> i9 -> i13 [label = "bfactor"];
> i9 -> i4_4 [label = "not"];
> i9 -> i5_4 [label = "("];
> i9 -> i6_4 [label = "true"];
> i9 -> i7_4 [label = "false"];
> i11 -> i14 [label = ")"];
> i11 -> i8_1 [label = "or"];
> i12 -> i9_1[label = "and"];
> {rank = same;i0,i5};
> }
>
> ​
>
>
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