5 Graph Description Language (GDL) - Absint

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5.7 Graph Attributes This section describes the whole list of graph attributes. Each attribute is listed together with its type, default value and where it can be used, i. e. in the top-level graph, a subgraph specification or in both. • amax Type: integer Default value: automatic Attribute of: top-level graph Description: This attribute specifies the number of iterations that are animated after relayout. Specifying 0 means animation is turned off. This value can be changed interactively in the View dialog box (see p. 36). • arrow_mode Type: fixed, free Default value: free Attribute of: top-level graph, subgraphs Description: This attribute specifies two modes for drawing arrow heads. – fixed This arrow mode should be used if port sharing (see port_sharing on p. 81 ) is used because then only a fixed set of rotations for the arrow heads are used. Here the arrow head is rotated only in increments of 45 degrees, and only one arrow head occurs at each port. – free Here each arrow head is rotated individually for each edge. If a node has many incoming edges, this parameter can lead to a confusing image. • attraction Type: integer Default value: 60 Attribute of: top-level graph Description: This attribute applies only to the forcedir layout algorithm. Here it is part of the force-directed spring embedder during attractive impulse calculation. It specifies the constant proportional to the attractive forces acting on a node. This constant and its repulsive counterpart (see p. 82) enable the length of edges to be controlled. For example, if only attractive and repulsive forces are working on a node, an edge length of n pixels is achieved for edges with priority of 1 (see edge attribute priority on p. 103) by specifying n 2 for the attributes attraction and repulsion. Usually the values for these two attributes are of the same order of magnitude. For details, see p. 115. 66
• bmax Type: integer Default value: 100 Attribute of: top-level graph, subgraphs Description: This attribute sets the maximum number of iterations of the phase reducing edge bends. Edge bends are used to prevent edges from being drawn across nodes. Reducing the number of iterations reduces layout calculation time, however the layout quality may suffer. • border Type: x : integer pixels or y : integer pixels Default value: x : 600, y : 600 Attribute of: top-level graph Description: This attribute applies only to the forcedir layout algorithm. Depending on the specification of the layout parameters for the forcedir layout algorithm it is possible for nodes to move far away from one another (especially single nodes not connected to the main graph) This prevents nodes from being placed “infinitely” far from one another. These two attributes enable a rectangle to be specified within which the graph is drawn. For details, see p. 115. • bordercolor Type: black, blue, red, ... Default value: Same as the value of the textcolor attribute for summary nodes Attribute of: subgraphs Description: Specifies the color for borders of summary nodes, boxes and frames of clusters. For details on colors, see p. 105. See also color (p. 68) and textcolor attribute (p. 87). • borderstyle Type: continuous, dashed, dotted, double, invisible, solid, triple Default value: continuous Attribute of: subgraphs Description: This attribute specifies the line style used for drawing the borders of a summary node. See also edge attribute linestyle (p. 102). • borderwidth Type: integer Default value: 2 pixels Attribute of: subgraphs Description: This attribute specifies the thickness of the border of a summary node in pixels. 67
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aiSee Graph Visualization User Docu
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3.6 Auxiliaries (User Action) . . .
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6.4.1 Rank Assignment . . . . . . .
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1 Introduction aiSee is a tool that
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3 Usage This chapter describes the
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3.3 Navigating Through a Graph Ther
Page 15 and 16: • Information field 1, 2, or 3 Th
Page 17 and 18: focus. The entire graph is drawn in
Page 19 and 20: • Clicking in an open information
Page 21 and 22: There is no direct interface for pr
Page 23 and 24: • Center width centers horizontal
Page 25 and 26: 4.1.3 Example Figure 7 shows a nest
Page 27 and 28: 4.1.4 Edge Classes - Expose/Hide Ed
Page 29 and 30: Operations: A neighbor region can b
Page 31 and 32: Note: Clustering is an experimental
Page 33 and 34: Figure 9: View Dialog Box • Scrol
Page 35 and 36: Figure 11: Polar Fish-Eye View Self
Page 37 and 38: for a graph and if animation is tur
Page 39 and 40: • Arrow Heads Enables the mode fo
Page 41 and 42: B in the message window (see p. 120
Page 43 and 44: } < list of node attributes > The t
Page 45 and 46: } target: < title of target node >
Page 47 and 48: 5.6 Examples of GDL Specifications
Page 49 and 50: Figure 14: Bent Near, Right-Bent Ne
Page 51 and 52: 06 yspace: 55 07 node: { title:"18"
Page 53 and 54: 22 node: { title:"2" label: "Start"
Page 55 and 56: 11 edge: { source: "0" target: "4"
Page 57 and 58: Figure 21: Example 10, maxdepth; an
Page 59 and 60: • maxoutdegree, finetuning: no Th
Page 61 and 62: Figure 27: Example 11, tree layout,
Page 63 and 64: the style of edges in order to redu
Page 65: 63 node: { title: "tcsh" level: 6 s
Page 69 and 70: specifies the color white. For inst
Page 71 and 72: - energetic gravity, Default value:
Page 73 and 74: This attribute specifies the consta
Page 75 and 76: Attribute of: subgraphs Description
Page 77 and 78: maxdepth and maxdepth do not provid
Page 79 and 80: • magnetic_field1, magnetic_field
Page 81 and 82: 0 for pmin 100 for pmax Attribute o
Page 83 and 84: min sets the minimum number of iter
Page 85 and 86: This parameter only influences the
Page 87 and 88: • tempscheme Type: integer Defaul
Page 89 and 90: For details on user actions, see se
Page 91 and 92: screen, i. e. the x and y coordinat
Page 93 and 94: 5.8 Node Attributes This section de
Page 95 and 96: AISEEICONS can be set to the direct
Page 97 and 98: Description: Specifies the horizont
Page 99 and 100: Description: In a hierarchical layo
Page 101 and 102: - ”solid” Arrow head is a trian
Page 103 and 104: - dotted The edge consists of singl
Page 105 and 106: 5.10 Colors aiSee has a color map o
Page 107 and 108: PostScript, the original PostScript
Page 109 and 110: 5.12 User Action aiSee supports the
Page 111 and 112: - Selecting special characters Spec
Page 113 and 114: egion_attribute : “source” “:
Page 115 and 116: 6 Overview of the Layout Phases The
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6.4 Hierarchical Layout 6.4.1 Rank
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The ordering of nodes within one le
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7 Tables 7.1 Node Attributes Table
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Key Menu Item Command Navigation Co
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-notune | -nofinetune See finetunin
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-d minindeg | -d minindegree See la
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-view dcfish See view (p. 90). -vie
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a4 | A4 A4 (21 cm x 30 cm) b5 | B5
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-canim Animates the crossing reduct
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[WiMa92] Wilhelm, Reinhard; Maurer,
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-nomanhattan, 125 -nonearedge, 126
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edge style continuous, 102 dashed,
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near_edges, 80 nearedge, 44, 111 ne
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xspace, 92, 119 y, 90 ybase, 91 yma
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5 Graph Description Language (GDL) - Absint

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