python

VTK – Area Layouts Of Graph Visualizations

There are three examples using views displaying relations of vtk classes. The article learned from VTKUsersGuide vtkTreeRingView Python #!/usr/bin/env python from vtk import * def main(): datapath = “/Users/weiyang/Downloads/VTKData” #vtk.util.misc.vtkGetDataRoot() reader1 = vtkXMLTreeReader() reader1.SetFileName(datapath + “/Data/Infovis/XML/vtkclasses.xml”) reader1.SetEdgePedigreeIdArrayName(“tree edge”) reader1.GenerateVertexPedigreeIdsOff(); reader1.SetVertexPedigreeIdArrayName(“id”); reader2 = vtkXMLTreeReader() reader2.SetFileName(datapath + “/Data/Infovis/XML/vtklibrary.xml”) reader2.SetEdgePedigreeIdArrayName(“graph edge”) reader2.GenerateVertexPedigreeIdsOff(); reader2.SetVertexPedigreeIdArrayName(“id”); Read more…

By theArcticOcean, 6 years4 years ago

Python

Two Ways To Add Data Object For vtkView

Two ways to add data object for a vtkView. 1) Create a representation object, set the inputs for it by calling SetInputConnection() or SetInput(), then add representation for the view. 2) Use AddRepresentationFromInputConnection or AddRepresentationFromInput to create representation automatically. 1) Python from vtk import * surfaceRepresentation = vtkRenderedSurfaceRepresentation() sphere = Read more…

By theArcticOcean, 6 years4 years ago

Python

Example: vtkGraphLayoutView And vtkGraphToGlyphs

vtkGraphLayoutView is a subclass of vtkGraphLayoutView which has own renderer, renderWindow, command observer, actor and etc. The following code shows how to use it to display a 2D image. from vtk import * def main(): # create a random graph source = vtkRandomGraphSource() source.SetNumberOfVertices(100) source.SetNumberOfEdges(110) source.StartWithTreeOn() source.Update() arcParallelStrategy = vtkArcParallelEdgeStrategy() Read more…

By theArcticOcean, 6 years4 years ago

Python

VTK – vtkClipPolyData Example

The article shows how to clip a cone by a plane. The vtkClipPolyData object provides a major algorithm to process the 3D model. Here is python script that describes all details about it. #!/usr/bin/env python import vtk cone = vtk.vtkConeSource() coneMapper = vtk.vtkPolyDataMapper() coneMapper.SetInputConnection( cone.GetOutputPort() ) coneActor = vtk.vtkActor() coneActor.SetMapper( Read more…

By theArcticOcean, 6 years4 years ago

CPlusPlus

VTK – vtkGraphLayoutView Example

vtkRandomGraphSource can be used to create a random graph which includes points and edges. vtkGraphLayoutView is a vtkRenderView which has its own renderer and iterator, we can use it to display graph view. from vtk import * # create a random graph source = vtkRandomGraphSource() source.SetNumberOfVertices(100) source.SetNumberOfEdges(110) source.StartWithTreeOn() #create a Read more…

By theArcticOcean, 6 years4 years ago

Math

Wolfram And Python: Elementary Arithmetic

The article shows how to use python and Mathematica to do elementary arithmetic with a few examples. The examples come from An Elementary Introduction To The Wolfram Language Calculate 10 to the power 12 python: print( 10**12 ) wolfram: 10^12 => 1000000000000 Compute 2 to the power 2 to the Read more…

By theArcticOcean, 6 years4 years ago

Math

First Look At Lists With Wolfram And Python

The article shows how to use a list in python and Mathematica with a few examples. The examples come from An Elementary Introduction To The Wolfram Language Plot a list that counts up from 1 to 10, then down to 1. wolfram: ListPlot[ Join[ Range[10],Reverse[Range[9] ] ] ] python: import Read more…

By theArcticOcean, 6 years4 years ago

Math

Wolfram And Python: Display Data In Lists

The airticle shows how to display list in python and mathematica with a few examples. The examples come from An Elementary Introduction To The Wolfram Language Make a bar chart of { 1, 1, 2, 3, 5 } Python: import matplotlib.pyplot as plt y = (1,1,2,3,5) x = range( len(y)+1 Read more…

By theArcticOcean, 6 years4 years ago

Python

VTK – A Simple Example Written In Python Script

This post is similar to 【VTK】A SIMPLE EXAMPLE WRITTEN IN C++ We use python script to do the same thing: create and show a cone in 3D world with the virtualization tool kit. python script: #!/usr/bin/env python import vtk cone = vtk.vtkConeSource() coneMapper = vtk.vtkPolyDataMapper() coneMapper.SetInputConnection( cone.GetOutputPort() ) coneActor = Read more…

By theArcticOcean, 6 years1 year ago