12/1/2021

Graphviz Python

Graphviz Support. A vscode extension that provides language support and live preview for the Graphviz format. The preview uses the Viz.js library. The extension can be activated in two ways. Python graphviz.Digraph Examples The following are 30 code examples for showing how to use graphviz.Digraph. These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. Mostly correct notes for building Graphviz on Windows can be found here. MacPorts. provides both stable and development versions of Graphviz and the Mac GUI Graphviz.app.These can be obtained via the ports graphviz, graphviz-devel, graphviz-gui and graphviz-gui-devel. $ sudo port install graphviz.

This package facilitates the creation and rendering of graph descriptions inthe DOT language of the Graphviz graph drawing software (master repo) fromPython.

Create a graph object, assemble the graph by adding nodes and edges, andretrieve its DOT source code string. Save the source code to a file and renderit with the Graphviz installation of your system.

Use the view option/method to directly inspect the resulting (PDF, PNG,SVG, etc.) file with its default application. Graphs can also be renderedand displayed within Jupyter notebooks (formerly known asIPython notebooks, example, nbviewer) as well as the Jupyter Qt Console.

Links¶

  • GitHub: https://github.com/xflr6/graphviz

  • PyPI: https://pypi.org/project/graphviz/

  • Documentation: https://graphviz.readthedocs.io

  • Changelog: https://graphviz.readthedocs.io/en/latest/changelog.html

  • Issue Tracker: https://github.com/xflr6/graphviz/issues

  • Download: https://pypi.org/project/graphviz/#files

Installation¶

This package runs under Python 2.7, and 3.6+, use pip to install:

To render the generated DOT source code, you also need to install Graphviz(download page, installation procedure for Windows, archived versions).

Make sure that the directory containing the dot executable is on yoursystems’ path.

Quickstart¶

Create a graph object:

Add nodes and edges:

Graphviz Python Example

Check the generated source code:

Save and render the source code, optionally view the result:

See also¶

  • pygraphviz – full-blown interface wrapping the Graphviz C library with SWIG

  • graphviz-python – official Python bindings (documentation)

  • pydot – stable pure-Python approach, requires pyparsing

License¶

This package is distributed under the MIT license.

  • User Guide
  • Examples
  • API Reference
  • Changelog

This extension allows you to embed Graphviz graphs inyour documents.

It adds these directives:

..graphviz::

Directive to embed graphviz code. The input code for dot is given as thecontent. For example:

Python

In HTML output, the code will be rendered to a PNG or SVG image (seegraphviz_output_format). In LaTeX output, the code will berendered to an embeddable PDF file.

You can also embed external dot files, by giving the file name as anargument to graphviz and no additional content:

As for all file references in Sphinx, if the filename is absolute, it istaken as relative to the source directory.

Changed in version 1.1: Added support for external files.

options

:alt:alternatetext(text)

The alternate text of the graph. By default, the graph code is used tothe alternate text.

:align:alignmentofthegraph(left,centerorright)

The horizontal alignment of the graph.

New in version 1.5.

:caption:captionofthegraph(text)

The caption of the graph.

:layout:layouttypeofthegraph(text)

The layout of the graph (ex. dot, neato and so on). A path to thegraphviz commands are also allowed. By default, graphviz_dotis used.

New in version 1.4.

:name:label(text)

The label of the graph.

New in version 1.6.

Install
:class:classnames(alistofclassnamesseparetedbyspaces)

The class name of the graph.

..graph::

Directive for embedding a single undirected graph. The name is given as adirective argument, the contents of the graph are the directive content.This is a convenience directive to generate graph<name>{<content>}.

For example:

Note

The graph name is passed unchanged to Graphviz. If it containsnon-alphanumeric characters (e.g. a dash), you will have to double-quoteit.

options

Same as graphviz.

Graphviz Python
:alt:alternatetext(text)
:align:alignmentofthegraph(left,centerorright)

New in version 1.5.

:caption:captionofthegraph(text)
:layout:layouttypeofthegraph(text)

New in version 1.4.

:name:label(text)

New in version 1.6.

:class:classnames(alistofclassnamesseparetedbyspaces)

The class name of the graph.

..digraph::

Directive for embedding a single directed graph. The name is given as adirective argument, the contents of the graph are the directive content.This is a convenience directive to generate digraph<name>{<content>}.

For example:

Python

options

Same as graphviz.

:alt:alternatetext(text)

New in version 1.0.

:align:alignmentofthegraph(left,centerorright)

Graphviz Python Parser

:caption:captionofthegraph(text)

Graphviz Python

New in version 1.1.

:layout:layouttypeofthegraph(text)

Changed in version 2.2: Renamed from graphviz_dot

Python Graphviz Dot

:name:label(text)
:class:classnames(alistofclassnamesseparetedbyspaces)
Tutorial

The class name of the graph.

New in version 2.4.

There are also these config values:

graphviz_dot

The command name with which to invoke dot. The default is 'dot'; youmay need to set this to a full path if dot is not in the executablesearch path.

Since this setting is not portable from system to system, it is normally notuseful to set it in conf.py; rather, giving it on thesphinx-build command line via the -Doption should be preferable, like this:

graphviz_dot_args

Additional command-line arguments to give to dot, as a list. The default isan empty list. This is the right place to set global graph, node or edgeattributes via dot’s -G, -N and -E options.

graphviz_output_format

Graphviz Python

The output format for Graphviz when building HTML files. This must be either'png' or 'svg'; the default is 'png'. If 'svg' is used, inorder to make the URL links work properly, an appropriate targetattribute must be set, such as '_top' and '_blank'. For example, thelink in the following graph should work in the svg output:

Graphviz Python Anaconda

New in version 1.0: Previously, output always was PNG.