5 Graph Description Language (GDL) - Absint

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• classname Type: integer : string Default value: 1 : “1”, 2 : “2”, 3 : “3”, ... Attribute of: top-level graph Description: This attribute enables the names of edges classes to be introduced. These names appear in the Select Edge Classes dialog box. For details on edge classes, see p. 27. • cmin, cmax Type: integer Default value: 0 for cmin, infinite for cmax Attribute of: top-level graph, subgraphs Description: The cmin attribute sets the minimum number of iterations that are performed for reducing crossings using crossing weights. The normal method stops when two consecutive checks no longer cause the number of crossings to be reduced. However, this number of crossings might be a local minimum, meaning the number of crossing might decrease even more after some more iterations. The cmax attribute sets the maximum number of iterations of the crossing reduction phase. A reduction of this value causes the layout process to be speeded up. The default value infinite means that the method is iterated as long as any improvement is possible. • color Type: black, blue, red, ... Default value: white for top-level graph white for subgraphs Attribute of: top-level graph, subgraphs Description: – top-level graph Here the color attribute specifies the background color of the graph window. – subgraphs Here it specifies the background color of subgraphs. This color is valid as the background color in summary nodes, boxes, clusters and as a wrapping color. For details on colors, see p. 105. See also attributes textcolor (p. 87) and bordercolor (p. 67). • colorentry Type: integer : integer integer integer Default value: no default value defined Attribute of: top-level graph, subgraphs Description: This attribute enables the default color map to be filled and changed. A color is a triple of integer values for the red, green and blue part. Each integer ranges from 0 (color part turned off) to 255 (color part turned on), e. g. 0 0 0 specifies the color black and 255 255 255 68
specifies the color white. For instance, colorentry 75 : 70 130 180 sets map entry 75 to steel blue. This color can be used by merely specifying 75 wherever a color value is expected. For more details on colors, see p. 105. • crossing_optimization Type: yes, no Default value: yes Attribute of: top-level graph, subgraphs Description: yes activates the crossing optimization phase, which works locally. It is a postprocessing phase after normal crossing reduction. It tries to optimize locally by exchanging pairs of nodes to reduce the number of crossings. • crossing_phase2 Type: yes, no Default value: yes Attribute of: top-level graph, subgraphs Description: yes activates crossing reduction phase two. In this phase, nodes having equal crossing weights are permuted. Note that this is the most time-consuming phase of crossing reduction. • crossing_weight Type: bary, median, barymedian, medianbary Default value: bary Attribute of: top-level graph, subgraphs Description: This attribute specifies the weight to be used for crossing reduction. There is no general recommendation as to which is the best method. A guideline might be to use bary if the degree of the nodes is large and median or one of the hybrid methods barymedian or medianbary if the degree is small, the degree of a node being the total of incoming and outgoing edges at a node. See p. 118 for details. – bary The barycenter is used for calculating the weights during crossing reduction. This is the fastest method for graphs with nodes whose average degree is very large. – median The median center is used for calculating the weights during crossing reduction. – barymedian These weights are the combination of barycenter and mediancenter weights, with barycenter having priority and mediancenter only being used for nodes whose barycenter weights are equal. – medianbary These weights are the combination of barycenter and mediancenter weights, with the mediancenter having priority. • dirty_edge_labels Type: yes, no 69
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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 . . . . . . .
Page 9 and 10:
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
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• 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 and 66: 63 node: { title: "tcsh" level: 6 s
Page 67: • bmax Type: integer Default valu
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
Page 117 and 118: 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
Page 143:
xspace, 92, 119 y, 90 ybase, 91 yma
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5 Graph Description Language (GDL) - Absint

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