Cluster Attributes

• area – Indicates the preferred area for a node or empty cluster. For patchwork only.
• bb – Bounding box of drawing in points. For write only.
• bgcolor – Canvas background color.
• class – Classnames to attach to the node, edge, graph, or cluster's SVG element. For svg only.
• cluster – Whether the subgraph is a cluster.
• color – Basic drawing color for graphics, not text.
• colorscheme – A color scheme namespace: the context for interpreting color names.
• fillcolor – Color used to fill the background of a node or cluster.
• fontcolor – Color used for text.
• fontname – Font used for text.
• fontsize – Font size, in points, used for text.
• gradientangle – If a gradient fill is being used, this determines the angle of the fill.
• href – Synonym for URL. For map, postscript, svg only.
• id – Identifier for graph objects. For map, postscript, svg only.
• K – Spring constant used in virtual physical model. For fdp, sfdp only.
• label – Text label attached to objects.
• labeljust – Justification for graph & cluster labels.
• labelloc – Vertical placement of labels for nodes, root graphs and clusters.
• layer – Specifies layers in which the node, edge or cluster is present.
• lheight – Height of graph or cluster label, in inches. For write only.
• lp – Label center position. For write only.
• lwidth – Width of graph or cluster label, in inches. For write only.
• margin – For graphs, this sets x and y margins of canvas, in inches.
• nojustify – Whether to justify multiline text vs the previous text line (rather than the side of the container).
• pencolor – Color used to draw the bounding box around a cluster.
• penwidth – Specifies the width of the pen, in points, used to draw lines and curves.
• peripheries – Set number of peripheries used in polygonal shapes and cluster boundaries.
• sortv – Sort order of graph components for ordering packmode packing.
• style – Set style information for components of the graph.
• target – If the object has a URL, this attribute determines which window of the browser is used for the URL. For map, svg only.
• tooltip – Tooltip (mouse hover text) attached to the node, edge, cluster, or graph. For cmap, svg only.
• URL – Hyperlinks incorporated into device-dependent output. For map, postscript, svg only.