概述
Graphviz (Graph Visualization Software) 是一个由AT&T实验室启动的开源工具包。DOT是一种图形描述语言,非常简单的,
Graphviz就是用来处理这种语言的工具。只需要简单了解一下DOT语言,就可以用Graphviz绘图了,它对程序员特别有用。
So in short, if you are a programmer, it is born for you。
无向图
[java] view plain copy- graph graphname {
- a -- b -- c;
- b -- d;
- }
有向图
[java] view plain copy- digraph graphname {
- a -> b -> c;
- b -> d;
- }
属性
[java] view plain copy- //DOT语言中,可以对节点和边添加不同的属性。
- digraph graphname {
- //节点的属性,节点的名称
- a [lable = "Foo"];
- //节点的属性,节点的形状
- b [shape = box];
- //边的属性,边的颜色
- a -> b -> c [color = blue];
- //边的属性,边的线状
- b -> d [style = dotted];
- }
基本图形
[java] view plain copy- digraph G {
- //把图片的尺寸设为4inch * 4inch
- size = "4,4";
- main [shape = box];
- //边的重要程度,默认是1
- main->parse [weight = 8];
- parse->execute;
- //点状线
- main->init[style = dotted];
- main->cleanup;
- //连接了两条线
- execute->{make_string;printf}
- init->make_string;
- //把边的默认颜色设为red
- edge [color = red];
- main->printf [sytle=bold, label = "100times"];
- //节点的名称
- make_string [label = "make a\nstring"];
- //设置节点的默认属性
- node [shape=box,style =filled,color=lightgrey];
- execute->compare;
- }
多边形
[java] view plain copy- digraph G{
- a -> b -> c;
- b -> d;
- /* 形状为多边形,边数为5,外框为3条,颜色为淡蓝,样式为填充 */
- a [shape = polygon, sides = 5, peripheries = 3, color = lightblue, style = filled];
- /* 形状为多边形,边数为4,角的倾斜度为0.4,内容为hellow world*/
- c [shape = polygon, sides = 4, skew = 0.4, label = "hello world"];
- /* 形状为倒三角,整体旋转30度 */
- d [shape = invtriangle,orientation = 30];
- /* 形状为多边形,边数为4,扭曲度为0.7 */
- e [shape = polygon, sides = 4, distortion = 0.7];
- }
数据结构
(1)复杂的标签
[java] view plain copy- digraph structs {
- /* 把节点的默认形状设为矩形record,默认的是圆角矩形Mrecord */
- node [shape = record];
- struct1 [label = "left|middle|right"];
- struct2 [label = "one|two"];
- struct3 [label = "hello\nworld|{b|{c|d|e}|f}|g|h"];
- struct1 -> struct2;
- struct1 -> struct3;
- }
[java] view plain copy
- graph picture {
- //这幅图的名字
- label = "I love you";
- //图名字的位置在bottom,也可以是t
- labelloc = b;
- //图名字的位置在left,也可以是r
- labeljust = l;
- edge[decorate = true];
- C -- D [label = "s1"];
- C -- E [label = "s2"];
- C -- F [label = "s3"];
- D -- E [label = "s4"];
- D -- F [label = "s5"];
- edge[decorate = false, labelfontcolor = blue, fontcolor = red];
- C1 -- D1 [headlabel = "c1",taillabel = "d1",label = "c1 - d1"];
- }
(2)行列对齐
[java] view plain copy- digraph html {
- rankdir = LR;
- {
- node[shape = plaintext];
- 1995 -> 1996 -> 1997 -> 1998 -> 1999 -> 2000 -> 2001;
- }
- {
- node[shape = box, style = filled];
- WAR3 -> Xhero -> Footman -> DOTA:
- WAR3 -> Battleship;
- }
- {rank = same; 1996; WAR3;}
- {rank = same; 1998; Xhero; Battleship;}
- {rank = same; 1999; Footman;}
- {rank = same; 2001; DOTA;}
- }
(3)二叉树
[java] view plain copy- digraph G {
- label = "Binary search tree";
- node [shape = record];
- A [label = "<f0>|<f1>A|<f2>"];
- B [label = "<f0>|<f1>B|<f2>"];
- C [label = "<f0>|<f1>C|<f2>"];
- D [label = "<f0>|<f1>D|<f2>"];
- E [label = "<f0>|<f1>E|<f2>"];
- F [label = "<f0>|<f1>F|<f2>"];
- G [label = "<f0>|<f1>G|<f2>"];
- A:f0 -> B:f1;
- A:f2 -> C:f1;
- B:f0 -> D:f1;
- B:f2 -> E:f1;
- C:f0 -> F:f1;
- C:f2 -> G:f1;
- }
(4)哈希表
[java] view plain copy- digraph G{
- nodesep = .05;
- rankdir = LR;
- node [shape = record,width = .1,height = .1];
- node0 [label = "<f0>|<f1>|<f2>|<f3>|<f4>|<f5>|<f6>|",height = 2.5];
- node [width = 1.5];
- node1 [label = "{<n>n14|719|<p>}"];
- node2 [label = "{<n>a1|805|<p>}"];
- node3 [label = "{<n>i9|718|<p>}"];
- node4 [label = "{<n>e5|989|<p>}"];
- node5 [label = "{<n>t20|959|<p>}"];
- node6 [label = "{<n>o15|794|<p>}"];
- node7 [label = "{<n>s19|659|<p>}"];
- node0:f0 -> node1:n;
- node0:f1 -> node2:n;
- node0:f2 -> node3:n;
- node0:f5 -> node4:n;
- node0:f6 -> node5:n;
- node2:p -> node6:n;
- node4:p -> node7:n;
- }
流程图
[java] view plain copy- digraph G{
- subgraph cluster0 {
- node [style = filled,color = white];
- style = filled;
- color = lightgrey;
- a0 -> a1 -> a2 -> a3;
- label = "process #1";
- }
- subgraph cluster1 {
- node [style = filled];
- b0 -> b1 -> b2 -> b3;
- label = "process #2";
- color = blue;
- }
- start -> a0;
- start -> b0;
- a1 -> b3;
- b2 -> a3;
- a3 -> a0;
- a3 -> end;
- b3 -> end;
- start [shape = Mdiamond];
- end [shape = Msquare];
- }
Reference
[1] http://zh.wikipedia.org/zh-cn/DOT语言,DOT语言简明介绍。
[2] http://zh.wikipedia.org/zh/Graphviz,简单背景知识。
[3] Graphviz中文指南。