how to write the figure name using dot - graphviz

What I want to ask is that we can draw figures using dot but is it possible to give a name to that figure and that name comes below that figure?

If your question is about graphviz, here's how to add a label below the graph:
digraph {
1 -> 2;
labelloc="b";
label="Graph label";
}

Related

Graphviz: Putting a Caption on a Node In Addition to a Label

In my Graphviz graph (written in DOT), I want each node to have a label, but in addition to that, I want some nodes to have a small caption denoting some other unique value for that node. For example, if this were for a history diagram, a node's label might be something like "Birth of George Washington" and the caption might read "See also: American Revolution."
This is fairly flexible, so the caption doesn't necessarily need to be inside the node, but I do need some other way of putting text that clearly isn't part of the label (e.g. is a different size, possibly a different color) and is in a different location but is still clearly a part of the node.
Is there any way to do this?
To place captions outside the node, you may use xlabel:
digraph g {
forcelabels=true;
a [label="Birth of George Washington", xlabel="See also: American Revolution"];
b [label="Main label", xlabel="Additional caption"];
a-> b;
}
forcelabels=true makes sure no xlabel is omitted.
A second option is to use HTML-like labels:
digraph g {
a[label=<Birth of George Washington<BR />
<FONT POINT-SIZE="10">See also: American Revolution</FONT>>];
}

Get rid of "_anonymous_0" tooltips in SVG with GraphViz

I generate SVGs using Graphviz. When embedded in HTML, the nodes, edges and arrows show an "_anonymous_0" tooltip. Can I get rid of these from within GraphViz?
Found by trial and error :-)
digraph "my title" {
tooltip=" "
node [tooltip=" "]
edge [tooltip=" "]
...
}
disables the automatic generation of tooltips.
an empty string
tooltip=""
does not(!) disable the generation.
If your dot source start something like this:
digraph {
it may help to use the following:
digraph "" {
It looks like the name of the graph (digraph mygraph { ) is transformed to a title element (<title>mygraph</title>). If you omit the name, *anonymous_0* is used instead. But if "" is used, no title element is being created.
There may be a better solution to this though...

How do you center a title for a diagram output to SVG using dot?

So far I tried this line but dot keeps pushing it aside making room for my nodes (pushes it to the right):
_diagram_info [shape="plaintext", label="My Diagram\l", fontsize=13]
Is there a way to center the label by pos, using dot?
That's how I'd add a title for a graph:
digraph {
// nodes, edges, subgraphs
...
// title
labelloc="t";
label="My Diagram";
}
This will add a centered title to the top of the graph.
The same syntax can also be used for subgraphs.

how can I adjust direction of edge in dot diagram?

Before asking, I tried to search the answer for my question, buf I couldn't find.
My question is about changing edge direction in dot diagram. Rankdir is 'LR', but in certain part of graph, I want to use 'TB'. Let me give an example.
digraph G {
rankdir=LR;
size="7,5";
browser->ui_thread;
browser->db_thread;
browser->webkit_thread;
browser->cache_thread;
browser->file_thread;
browser->io_thread;
io_thread[style=filled];
cache_thread[style=filled];
ui_thread->thread[label=inherit];
ui_thread->messageloop[style=dotted];
db_thread->messageloop[style=dotted];
webkit_thread->messageloop[style=dotted];
cache_thread->messageloop[style=dotted];
file_thread->messageloop[style=dotted];
io_thread->messageloop[style=dotted];
}
it gives out graph like this
But, this is not what I want.
I want the following image. "thread" is above "ui_thread" vertically.
You may think it can be solved easily using "rankdir=same" with "thread" and "ui_thread".
I sure tried this already. but I failed. "thread" is always below "ui_thread".
thanks,
Unfortunately, graph direction can only be specified once, and the whole graph stays in that direction. In this situation, you can usually get the desired effect with a combination of constraint=false and invisible edges to force some ordering.
This code will produce your second image:
digraph G {
rankdir=LR;
size="7,5";
browser->thread[style=invis];
browser->ui_thread;
browser->db_thread;
browser->webkit_thread;
browser->cache_thread;
browser->file_thread;
browser->io_thread;
io_thread[style=filled];
cache_thread[style=filled];
ui_thread->thread[label=inherit constraint=false];
ui_thread->messageloop[style=dotted];
db_thread->messageloop[style=dotted];
webkit_thread->messageloop[style=dotted];
cache_thread->messageloop[style=dotted];
file_thread->messageloop[style=dotted];
io_thread->messageloop[style=dotted];
}

Graphviz (DOT) Captions

I need to print a large number of graphs using Graphviz DOT. To distinguish which input each graph corresponds to, I want to also have a caption for each graph. Is there anyway to embed this into the DOT representation of the graphs.
You can use label to add a caption to the graph.
Example:
digraph {
A -> B;
label="Graph";
labelloc=top;
labeljust=left;
}
labelloc and labeljust can be used to determine top/bottom and left/right position of the graph label.
All the details and other attributes that can be used to modify the label (font etc) in the graphviz attribute reference.
Tip: Define the graph label end of your dot file, otherwise subgraphs will inherit those properties.
Graph's can have attributes just like nodes and edges do:
digraph {
graph [label="The Tale of Two Cities", labelloc=t, fontsize=30];
node [color=blue];
rankdir = LR;
London -> Paris;
Paris -> London;
}
That dot file produces this graph.
If you are looking for a way to add a caption to a Graph object of graphviz in python. Then the following code can help:
from graphviz import Graph
dot = Graph()
dot.node('1','1')
dot.node('2','2')
dot.edge('1','2', label="link")
dot.attr(label="My caption")
dot.attr(fontsize='25')
dot.render(view=True)
Output:

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