Talk:VTK/Examples/Cxx/Plotting/ScatterPlot

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Revision as of 15:47, 28 August 2013 by Diego0020 (talk | contribs) (Translation of the example to python)
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I have translated this example to python:

from __future__ import division import vtk import math view=vtk.vtkContextView() view.GetRenderer().SetBackground(1.0,1.0,1.0) view.GetRenderWindow().SetSize(400,300)

chart=vtk.vtkChartXY() view.GetScene().AddItem(chart) chart.SetShowLegend(True)

table=vtk.vtkTable()

arrX=vtk.vtkFloatArray() arrX.SetName('X Axis')

arrC=vtk.vtkFloatArray() arrC.SetName('Cosine')

arrS=vtk.vtkFloatArray() arrS.SetName('Sine')

arrT=vtk.vtkFloatArray() arrT.SetName('Sine-Cosine')

table.AddColumn(arrC) table.AddColumn(arrS) table.AddColumn(arrX) table.AddColumn(arrT)

numPoints=40

inc=7.5/(numPoints-1) table.SetNumberOfRows(numPoints) for i in xrange(numPoints): 

   table.SetValue(i,0,i*inc)
   table.SetValue(i,1,math.cos(i*inc))
   table.SetValue(i,2,math.sin(i*inc))
   table.SetValue(i,3,math.sin(i*inc)-math.cos(i*inc))

points=chart.AddPlot(vtk.vtkChart.POINTS) points.SetInputData(table,0,1) points.SetColor(0,0,0,255) points.SetWidth(1.0) points.SetMarkerStyle(vtk.vtkPlotPoints.CROSS)

points=chart.AddPlot(vtk.vtkChart.POINTS) points.SetInputData(table,0,2) points.SetColor(0,0,0,255) points.SetWidth(1.0) points.SetMarkerStyle(vtk.vtkPlotPoints.PLUS)

points=chart.AddPlot(vtk.vtkChart.POINTS) points.SetInputData(table,0,3) points.SetColor(0,0,255,255) points.SetWidth(1.0) points.SetMarkerStyle(vtk.vtkPlotPoints.CIRCLE)

view.GetRenderWindow().SetMultiSamples(0) view.GetInteractor().Initialize() view.GetInteractor().Start()

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