DOT语言语法规则

     graph: [ strict ] (graph | digraph) [ ID ] '{' stmt_list '}'
 stmt_list: [ stmt [ ';' ] stmt_list ]
      stmt: node_stmt |	edge_stmt |	attr_stmt |	ID '=' ID |	subgraph
 attr_stmt: (graph | node | edge) attr_list
 attr_list: '[' [ a_list ] ']' [ attr_list ]
    a_list: ID '=' ID [ (';' | ',') ] [ a_list ]
 edge_stmt: (node_id | subgraph) edgeRHS [ attr_list ]
   edgeRHS: edgeop (node_id | subgraph) [ edgeRHS ]
 node_stmt: node_id [ attr_list ]
   node_id: ID [ port ]
      port: ':' ID [ ':' compass_pt ] |	':' compass_pt
  subgraph: [ subgraph [ ID ] ] '{' stmt_list '}'
compass_pt: (n | ne | e | se | s | sw | w | nw | c | _)

属性列表

Name	Used By	Type	Default	Minimum	Notes
Damping	G	double	0.99	0.0	neato only
K	GC	double	0.3	0	sfdp, fdp only
URL	ENGC	escString	<none>		svg, postscript, map only
_background	G	string	<none>
area	NC	double	1.0	>0	patchwork only
arrowhead	E	arrowType	normal
arrowsize	E	double	1.0	0.0
arrowtail	E	arrowType	normal
bb	G	rect			write only
bgcolor	GC	color/colorList	<none>
center	G	bool	false
charset	G	string	"UTF-8"
clusterrank	G	clusterMode	local		dot only
color	ENC	color/colorList	black
colorscheme	ENCG	string	""
comment	ENG	string	""
compound	G	bool	false		dot only
concentrate	G	bool	false
constraint	E	bool	true		dot only
decorate	E	bool	false
defaultdist	G	double	1+(avg. len)*sqrt(|V|)	epsilon	neato only
dim	G	int	2	2	sfdp, fdp, neato only
dimen	G	int	2	2	sfdp, fdp, neato only
dir	E	dirType	forward(directed) none(undirected)
diredgeconstraints	G	string bool	false		neato only
distortion	N	double	0.0	-100.0
dpi	G	double	96.0 0.0		svg, bitmap output only
edgeURL	E	escString	""		svg, map only
edgehref	E	escString	""		svg, map only
edgetarget	E	escString	<none>		svg, map only
edgetooltip	E	escString	""		svg, cmap only
epsilon	G	double	.0001 * # nodes(mode == KK) .0001(mode == major)		neato only
esep	G	addDouble/addPoint	+3		not dot
fillcolor	NEC	color/colorList	lightgrey(nodes) black(clusters)
fixedsize	N	bool/string	false
fontcolor	ENGC	color	black
fontname	ENGC	string	"Times-Roman"
fontnames	G	string	""		svg only
fontpath	G	string	system-dependent
fontsize	ENGC	double	14.0	1.0
forcelabels	G	bool	true
gradientangle	NCG	int	""
group	N	string	""		dot only
headURL	E	escString	""		svg, map only
head_lp	E	point			write only
headclip	E	bool	true
headhref	E	escString	""		svg, map only
headlabel	E	lblString	""
headport	E	portPos	center
headtarget	E	escString	<none>		svg, map only
headtooltip	E	escString	""		svg, cmap only
height	N	double	0.5	0.02
href	GCNE	escString	""		svg, postscript, map only
id	GCNE	escString	""		svg, postscript, map only
image	N	string	""
imagepath	G	string	""
imagepos	N	string	"mc"
imagescale	N	bool/string	false
inputscale	G	double	<none>		fdp, neato only
label	ENGC	lblString	"\N" (nodes) "" (otherwise)
labelURL	E	escString	""		svg, map only
label_scheme	G	int	0	0	sfdp only
labelangle	E	double	-25.0	-180.0
labeldistance	E	double	1.0	0.0
labelfloat	E	bool	false
labelfontcolor	E	color	black
labelfontname	E	string	"Times-Roman"
labelfontsize	E	double	14.0	1.0
labelhref	E	escString	""		svg, map only
labeljust	GC	string	"c"
labelloc	NGC	string	"t"(clusters) "b"(root graphs) "c"(nodes)
labeltarget	E	escString	<none>		svg, map only
labeltooltip	E	escString	""		svg, cmap only
landscape	G	bool	false
layer	ENC	layerRange	""
layerlistsep	G	string	","
layers	G	layerList	""
layerselect	G	layerRange	""
layersep	G	string	" :\t"
layout	G	string	""
len	E	double	1.0(neato) 0.3(fdp)		fdp, neato only
levels	G	int	MAXINT	0.0	sfdp only
levelsgap	G	double	0.0		neato only
lhead	E	string	""		dot only
lheight	GC	double			write only
lp	EGC	point			write only
ltail	E	string	""		dot only
lwidth	GC	double			write only
margin	NCG	double point	<device-dependent>
maxiter	G	int	100 * # nodes(mode == KK) 200(mode == major) 600(fdp)		fdp, neato only
mclimit	G	double	1.0		dot only
mindist	G	double	1.0	0.0	circo only
minlen	E	int	1	0	dot only
mode	G	string	major		neato only
model	G	string	shortpath		neato only
mosek	G	bool	false		neato only
newrank	G	bool	false		dot only
nodesep	G	double	0.25	0.02
nojustify	GCNE	bool	false
normalize	G	double bool	false		not dot
notranslate	G	bool	false		neato only
nslimit/nslimit1	G	double			dot only
ordering	GN	string	""		dot only
orientation	N	double	0.0	360.0
orientation	G	string	""
outputorder	G	outputMode	breadthfirst
overlap	G	string bool	true		not dot
overlap_scaling	G	double	-4	-1.0e10	prism only
overlap_shrink	G	bool	true		prism only
pack	G	bool/int	false
packmode	G	packMode	node
pad	G	double point	0.0555 (4 points)
page	G	double point
pagedir	G	pagedir	BL
pencolor	C	color	black
penwidth	CNE	double	1.0	0.0
peripheries	NC	int	shape default(nodes) 1(clusters)	0
pin	N	bool	false		fdp, neato only
pos	EN	point/splineType
quadtree	G	quadType/bool	normal		sfdp only
quantum	G	double	0.0	0.0
rank	S	rankType			dot only
rankdir	G	rankdir	TB		dot only
ranksep	G	double doubleList	0.5(dot) 1.0(twopi)	0.02	twopi, dot only
ratio	G	double string
rects	N	rect			write only
regular	N	bool	false
remincross	G	bool	true		dot only
repulsiveforce	G	double	1.0	0.0	sfdp only
resolution	G	double	96.0 0.0		svg, bitmap output only
root	GN	string bool	<none>(graphs) false(nodes)		circo, twopi only
rotate	G	int	0
rotation	G	double	0		sfdp only
samehead	E	string	""		dot only
sametail	E	string	""		dot only
samplepoints	N	int	8(output) 20(overlap and image maps)
scale	G	double point			not dot
searchsize	G	int	30		dot only
sep	G	addDouble/addPoint	+4		not dot
shape	N	shape	ellipse
shapefile	N	string	""
showboxes	ENG	int	0	0	dot only
sides	N	int	4	0
size	G	double point
skew	N	double	0.0	-100.0
smoothing	G	smoothType	"none"		sfdp only
sortv	GCN	int	0	0
splines	G	bool/string
start	G	startType	""		fdp, neato only
style	ENCG	style	""
stylesheet	G	string	""		svg only
tailURL	E	escString	""		svg, map only
tail_lp	E	point			write only
tailclip	E	bool	true
tailhref	E	escString	""		svg, map only
taillabel	E	lblString	""
tailport	E	portPos	center
tailtarget	E	escString	<none>		svg, map only
tailtooltip	E	escString	""		svg, cmap only
target	ENGC	escString/string	<none>		svg, map only
tooltip	NEC	escString	""		svg, cmap only
truecolor	G	bool			bitmap output only
vertices	N	pointList			write only
viewport	G	viewPort	""
voro_margin	G	double	0.05	0.0	not dot
weight	E	int double	1	0(dot,twopi) 1(neato,fdp)
width	N	double	0.75	0.01
xdotversion	G	string			xdot only
xlabel	EN	lblString	""
xlp	NE	point			write only
z	N	double	0.0	-MAXFLOAT -1000

箭头样式

    arrowname:	aname [ aname [ aname [ aname ] ] ]
        aname:	[ modifiers ] shape
    modifiers:	[ 'o' ] [ side ]
         side:	'l' | 'r'
        shape:	box | crow | curve | icurve | diamond |	dot | inv |	none | normal |	tee | vee

shape	效果
box
crow
curve
diamond
dot
icurve
inv
none
normal
tee
vee

配色方案

• 默认X11配色方案
• 支持SVG配色方案
• 详情

主要参考

• 官网地址
• 新官网地址