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43 lines
1.4 KiB
Python
43 lines
1.4 KiB
Python
#!/usr/bin/env python
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from vtk import *
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import os.path
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from vtk.util.misc import vtkGetDataRoot
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VTK_DATA_ROOT = vtkGetDataRoot()
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data_dir = VTK_DATA_ROOT + "/Data/Infovis/SQLite/"
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if not os.path.exists(data_dir):
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data_dir = VTK_DATA_ROOT + "/Data/Infovis/SQLite/"
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if not os.path.exists(data_dir):
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data_dir = VTK_DATA_ROOT + "/Data/Infovis/SQLite/"
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sqlite_file = data_dir + "SmallEmailTest.db"
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# Construct a graph from database tables (yes very tricky)
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databaseToGraph = vtkSQLDatabaseGraphSource()
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databaseToGraph.SetURL("sqlite://" + sqlite_file)
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databaseToGraph.SetEdgeQuery("select source, target from emails")
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databaseToGraph.SetVertexQuery("select Name, Job, Age from employee")
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databaseToGraph.AddLinkVertex("source", "Name", False)
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databaseToGraph.AddLinkVertex("target", "Name", False)
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databaseToGraph.AddLinkEdge("source", "target")
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view = vtkGraphLayoutView()
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view.AddRepresentationFromInputConnection(databaseToGraph.GetOutputPort())
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view.SetVertexLabelArrayName("label")
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view.SetVertexLabelVisibility(True)
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view.SetVertexColorArrayName("Age")
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view.SetColorVertices(True)
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view.SetLayoutStrategyToSimple2D()
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theme = vtkViewTheme.CreateMellowTheme()
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theme.SetCellColor(.2,.2,.6)
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theme.SetLineWidth(5)
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theme.SetPointSize(10)
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view.ApplyViewTheme(theme)
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theme.FastDelete()
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view.GetRenderWindow().SetSize(600, 600)
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view.ResetCamera()
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view.Render()
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view.GetInteractor().Start()
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