I can't figure out how to change the tail of an edge.
No problem with the arrow head, for example this works fine
digraph foo {
x->y [arrowhead=odot]
}
But since I want to change the tail I tried to invert the direction:
digraph foo {
x->y [arrowhead=odot dir=back]
}
This doesn't work, the arrow gets back to the default style.
Also the arrowtail attribute seems not to work, I always get the default style
digraph foo {
x->y [arrowtail=odot]
}
You almost had it - not all combinations of dir, arrowhead and arrowtail are valid.
Here's what works for which dir value:
dir arrowhead arrowtail
-----------------------------
forward x
back x
both x x
none
Therefore, the following should work in your case:
digraph foo {
x->y [arrowtail=odot, dir=back]
}
dir determines which arrows are allowed to be displayed. Which end of the arrow is the head and which end is considered to be the tail doesn't change.
Related
I have a state machine that, despite having very few node (8), has a lot of connections.
How can I draw it using graphviz in a presentable way.
Currently I have this. The problem is that this is not presentable in any way. The arrows have an awkward shape, the states are all over the place...
digraph finite_state_machine {
rankdir="TB";
size="8,5"
{rank = same; 1 2}
{rank = same; 3 4}
{rank = same; 7 8}
1->7[label="<p,a>"];
1->5[label="<p,a>"];
1->3[label="<p,a>"];
1->1[label="<p,a>"];
2->7[label="<~(p),a>"];
2->5[label="<~(p),a>"];
2->3[label="<~(p),a>"];
2->1[label="<~(p),a>"];
3->7[label="<p,a>"];
3->5[label="<p,a>"];
3->3[label="<p,a>"];
3->1[label="<p,a>"];
4->7[label="<~(p),a>"];
4->5[label="<~(p),a>"];
4->3[label="<~(p),a>"];
4->1[label="<~(p),a>"];
5->8[label="<p,a>"];
5->7[label="<p,a>"];
5->6[label="<p,a>"];
5->5[label="<p,a>"];
5->4[label="<p,a>"];
5->2[label="<p,a>"];
6->8[label="<~(p),a>"];
6->7[label="<~(p),a>"];
6->6[label="<~(p),a>"];
6->5[label="<~(p),a>"];
6->4[label="<~(p),a>"];
6->2[label="<~(p),a>"];
7->8[label="<p,a>"];
7->7[label="<p,a>"];
7->6[label="<p,a>"];
7->5[label="<p,a>"];
7->4[label="<p,a>"];
7->2[label="<p,a>"];
8->8[label="<~(p),a>"];
8->7[label="<~(p),a>"];
8->6[label="<~(p),a>"];
8->5[label="<~(p),a>"];
8->4[label="<~(p),a>"];
8->2[label="<~(p),a>"];
}
Which yields this
Is there any way I can make the automata more presentable?
Some times it help setting e.g. minlen=2 on edges, and decorate=1 make it more obvious where labels belong, try adding the following:
edge[decorate=1 minlen=2]
node[width=2 height=2 fontsize=50]
you can have a bit control of arrow tails and heads using compass so you might like the following better:
1:n->1:n
7:s->7:s
8:s->8:s
instead of:
1->1
7->7
8->8
since you only have 2 kind of edge labels It might also help to have a edge color depending on the label
I sugest you try these kind of things out on http://viz-js.com/
Hi my arrow like following:
https://i.imgur.com/EJNtfc3.png
Arrow on the red marked is glutinous.
How do I divide it?
add code
https://www.codepile.net/pile/XKvOwL3A
In your situation fastest fix would be to add nodesep = 0.15 graph attribute (right after digraph { statement). This attribute adjusts the minimal distance between the nodes in one rank. This results in:
Also you may play with headport and tailport attributes, as I suggested in the comment. Shortcut for them is to add a colon after node when you are defining edge.
If you replace TR_Client_Data -> idle with TR_Client_Data -> idle:e you will get this result:
Edges are crossed, but they are apart.
Also I've noticed that you define node attributes in a wrong way: keyword node defines global attributes for all nodes in the graph (or subgraph). If you want to specify attributes for a single node, place them after node definition.
e.g.
WRONG:
node [
shape = point,
fontsize = 12
] start_point;
CORRECT:
start_point [
shape = point,
fontsize = 12
];
Following is code using dot language.
subgraph cluster1
{
node[style=filled];
color=blue;
b0->b1;
label ="Tada"; // I want this to show as underlined.
}
You can use HTML-like labels and the <u> tag:
digraph cluster1
{
node[style=filled, color=blue];
b0->b1;
label = <<u>Tada</u>>; // I want this to show as underlined.
}
This is the result:
Note that your color=blue statement wasn't applied to any element. I moved it into node.
As pointed out in the comments, this currently only works for svg output. I tried with png and pdf on my Mac running 10.14.6 and they weren't underlined.
I am trying to draw a graph using Graphviz, but I need to add labels on the edges. There does not seem to be any way to that in Graphviz.
Are there a way out?
You use the label property attached to the edge.
digraph G {
a -> b [ label="a to b" ];
b -> c [ label="another label"];
}
The above generates a graph that looks something like this.
#Andrew Walker has given a great answer!
It's also worth being aware of the labeltooltip attribute. This allows an additional string to be attached to the label of an edge. This is easier for a user than the tooltip attribute, as it can be fiddly to hover directly on an edge. The syntax is as follows:
digraph G {
a -> b [label=" a to b" labeltooltip="this is a tooltip"];
b -> c [label=" another label" ];
}
Which gives the following result:
Landed here by googling whether labels could be on arrow's ends, for UML's composition/aggregation. The answer is yes:
"Person" -> "Hand" [headlabel="*", taillabel="1"]
You can use label="\E" It will generate bye default label.
For Example:
digraph G {
a -> b [ label="\E" ];
b -> c [ label="\E"];
}
When I changed the rankdir of my graph from LR to TD, my record nodes also changed their layout direction so they no longer look like a 'record'. I tried applying a separate rankdir to the nodes, but this had no effect.
How does one keep the record nodes with the correct layout?
digraph sample {
graph [rankdir=TD];
node [shape=record];
A [label="ShouldBeTop | ShouldBeBottom"];
B [label="Top | Bottom"];
A -> B;
}
Taking into account that rankdir effectively replaces the notion of "top" and "bottom" for the given graph, that's not surprising.
I am afraid that there is no easy remedy for this, save hacking the source (and that would not be easy at all). You can surround your labels in "{}" with some kind of mass search-replace solution to get the requested effect:
digraph sample { graph [rankdir=TD]; node [shape=record];
A [label="{ShouldBeTop | ShouldBeBottom}"];
B [label="{Top | Bottom}"]; A -> B;
}
You can use html table like labels instead of records. IIRC the table based labels do not rotate with the rank direction. See http://www.graphviz.org/doc/info/shapes.html#html