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Quick Reference provided by vladimir@cs.ualberta.ca (Dec 97)
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Command-line Invocation
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-{G,N,E}<attr>=<value> set graph/node/edge attribute
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-l<file> load graphics library
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-T<lang> output language (use "dot -T" to see which are supported)
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ps, hpgl, pcl, mif, pic, gd, gd2, gif, jpeg, png, wbmp, ismap, imap,
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dot (attributed), canon (prettyprinted),
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graph SCALE WIDTH HEIGHT
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node NAME X Y WIDTH HEIGHT LABEL STYLE SHAPE COLOR
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edge TAIL HEAD N X1 Y1 .. XN YN LABEL XL YL STYLE COLOR
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digraph G {foo -> bar}
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connect many nodes at once: {foo bar}->{baz bart}
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make a chain of links: foo->bar->baz
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Commas inside [...] and semicolons inside {...} are optional.
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Quotes around numbers are optional (?)
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// c++ like comment: to end of line
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/* c-like comment: between delimiters */
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Default value is first. Booleans can be true,false,TRUE,FALSE,1,0
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Graph/Subgraph Attributes
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bgcolor* background color
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clusterrank [local], global=none (don't draw box either)
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compound* has edges from/to cluster (see ltail/lhead below)
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concentrate merge edges with common head/tail. Doesn't work for short edges
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(they don't have virtual nodes to merge).
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layers* id:id:id:id range of layers (docs wrongly say "layerseq")
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mclimit 1.0 min cross iterations factor
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nslimit,nslimit1* bound network simplex iterations to n * number-of-nodes
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ordering [],out edges go out from left to right in creation order.
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Works for subgraphs too (?)
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orientation portrait,landscape
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overlap avoid node overlap (neato only)
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page unit of pagination (eg 8.5,11in)
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pagedir* [LRBT][LRBT] set major and minor pagination order
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quantum* 0.0. If non-zero, make node size a multiple of the quantum
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rank [],same,min,max,source(abs.min),sink(abs.max). Source and sink only allow
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rankdir TB,LR top-to-bottom or left-to-right
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ranksep 0.5in. This is extra to the size of nodes. If "equally",
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exact_ranksep=TRUE (all ranks are the same distance apart).
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ratio [], f (add space to achieve width/height=f), fill (add space to achieve
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size.x/size.y), compress (remove space), auto (reduce by half or print on
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rotate if 90deg, same as orientation=landscape
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searchsize* 30 for network simplex algorithm for ranking nodes
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size of graph (eg 8.5,11in)
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splines enable curved edges (neato only, dot always had them)
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fixedsize* don't expand node to accommodate label
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group* edges connecting nodes in the same group have weight*=100 and
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xpenalty=CL_CROSS (cluster crossing penalty). Thus, they should go
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"vertically". Similar to a vertical "rank=same", but only if there's an edge.
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height,width 0.5,0.75in
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shape ellipse,polygon,box,circle,diamond,doublecircle,doubleoctagon,egg,
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hexagon,house,invhouse,invtrapezium,invtriangle,octagon,parallelogram,
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plaintext,trapezium,triangle,tripleoctagon,
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record label="v1|..|vn" vertical components, "{h1|..|hn}" horizontal
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components, can nest recursively.
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"<p>" port name in component, use as "node:p" for edge head/tail
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Mcircle,Mdiamond,Msquare (little diagonals),Mrecord (rounded)
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epsf include shapefile in ps file
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shapefile for shape=epsf
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attrs for shape=polygon
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peripheries how many lines to draw around it
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orientation (rotation 0..360)
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regular (height=width)
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skew left-to-right (eg parallelogram=0.6)
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distortion top-to-bottom (eg trapezium=-0.4)
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toplabel,bottomlabel* for Mcircle and Mdiamond (these are AUXLABELS)
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arrowsize* 1.0 size factor (norm_length=10,norm_width=5,
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inv_length=6,inv_width=7,dot_radius=2)
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constraint* if FALSE then xpenalty=weight=0
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decorate draw line from edge to label
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dir none,forward,back,both
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id* doc says it's used to distinguish edge, but program doesn't mention it
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minlen 1 minimum length (ranks for normal edges,
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node separation for flat edges)
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tailclip,headclip [true] whether to clip the endpoint shape.
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ltail,lhead* cluster name from/to which the edge is clipped.
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The edge tail/head must be in the named cluster, else gives error.
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tailport=":t",headport=":h"* same as specifying m:t->n:h instead of simply
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m->n. Valid ports for polygons are s,e,w,n,se,ne,nw,sw.
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Note1: polygon_port skips the first char of the name (it assumes the name is
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of the form ":t" or ":h").
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Note2: the graph parser in libgraph allows for complex port names of the
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form `:(x,y)' and `@angle', and passes them unchanged. dot doesn't support
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weight importance for mincross(?)
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arrowhead,arrowtail+ none,normal,inv,dot,odot,invdot,invodot.
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headlabel,taillabel+ these are placed a fixed offset from the edge port and no
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allowance is made for their size, so they better be short. Don't work for
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headurl,tailurl for imap (by default, uses the url attribute).
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portsonly+ draw only the arrows and labels, not the edge itself.
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labeldistance+ 1.0 factor. port_label_distance=10: from port to {head,tai}label
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labelangle+ -25 degrees. pos is CCW, neg is CW.
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labelfontcolor,labelfontname,labelfontsize+ for {head,tail}label
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samehead,sametail+ aim edges with the same value of this attr to the same port,
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being the average of their natural landing points.
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sameheadslope,sametailslope+ constrain the edge end to the average slope of
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samearrowhead,samearrowtail+ share the arrow of another edge in the group.
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Specify arrowhead for one of the edges, and samearrowhead for it and all
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others who should share that arrow. The shared arrow will be drawn at the
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average slope for the group. Not supported for -Tplain and -Tattributed_dot,
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because they cannot specify arrows separate from the edge spline.
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BUG: does not work with label (ports are not respected).
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BUG: sameheadslope is not respected for half the edges when samearrowhead is
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color name (black,white,red,green,...) or "hue,saturation,brightness"
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comment* of object in ps/mif file
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fontname {times,helvetica,courier,palatino}-{roman,bold,italic|oblique,
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bolditalic|boldoblique},zapfdingbats,symbol, stick,stickcw (internal)
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label use \n\l\r for centered/left/right lines. Subgraph labels work only for
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clusters. Use \N to include the node name.
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layer [],all,all:id,id:all,id:id. Range of layers where this element appears.
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showboxes* (debugging) show spline boxes (1=before, 2=after fitsplines)
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style [],bold,dashed,dotted,filled,invis,unfilled,solid,"any ps command".
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For node: rounded, diagonals
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url for imap/ismap. Graph: default url, node: node's region url (use \N to
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include the node name), edge: only with imap.
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Output Attributes (-Tdot, -Tplain)
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node: pos, rects (record rectangles), width, height,
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edge: pos="s,x0,y0;x1,y1;...;e,xn,yn", lp (label pos),
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graph: lp (label pos), bb (bounding box)
added
removed
doc/Dot.ref
