go-graphviz

Go bindings for Graphviz ( port of version 2.40.1 )

Features

• No need to install Graphviz library ( brew install graphviz or apt-get install graphviz )
• Supports parsing for DOT language
• Supports rendering graph in pure Go
• Supports switch renderer to your own
• Supports type safed property setting
• gvc cgraph cdt are available as sub package

Currently supported Layout

circo dot fdp neato nop nop1 nop2 osage patchwork sfdp twopi

Currently supported format

dot svg png jpg

Installation

$ go get github.com/goccy/go-graphviz

Synopsis

package main

import (
  "bytes"
  "fmt"
  "log"

  "github.com/goccy/go-graphviz"
)

func main() {
  g := graphviz.New()
  graph, err := g.Graph()
  if err != nil {
    log.Fatal(err)
  }
  defer func() {
    if err := graph.Close(); err != nil {
      log.Fatal(err)
    }
    g.Close()
  }()
  n, err := graph.CreateNode("n")
  if err != nil {
    log.Fatal(err)
  }
  m, err := graph.CreateNode("m")
  if err != nil {
    log.Fatal(err)
  }
  e, err := graph.CreateEdge("e", n, m)
  if err != nil {
    log.Fatal(err)
  }
  e.SetLabel("e")
  var buf bytes.Buffer
  if err := g.Render(graph, "dot", &buf); err != nil {
    log.Fatal(err)
  }
  fmt.Println(buf.String())
}

Tool

dot

Installation

$ go get github.com/goccy/go-graphviz/cmd/dot

Usage

Usage:
  dot [OPTIONS]

Application Options:
  -T=         specify output format ( currently supported: dot svg png jpg ) (default: dot)
  -K=         specify layout engine ( currently supported: circo dot fdp neato nop nop1 nop2 osage patchwork sfdp twopi )
  -o=         specify output file name

Help Options:
  -h, --help  Show this help message

License

MIT