[vtkusers] XYPlot from non-VTK data source

[Pieper, Chris]

I apologize if this is a basic question but I was unable to find the
information I need by searching the mail archive...

 

I would like to make a very basic XY plot where I have X and Y data in
two Python lists.  I have seen some examples that are apparently quite
dated (from 1999) and no longer apply to modern versions of VTK.  

 

Can someone point me to a reference or comment on what the basic
strategy to generate an XY plot from a non-VTK datasource?

 

Here is what I'm trying to do, anyone in the know will quickly see that
this is wrong and doesn't work...    Can someone get me on track?  --
Thanks!

import vtk

x=[0., .5, 1.5, 2.7, 8.2, 9.3]
y=[0., 1.3, 2.9, 5.6, 7.3, 8.7]
z=[0., 0., 0., 0., 0., 0.]
N=len(x)

curve1=vtk.vtkRectilinearGrid()
curve1.SetDimensions(N,1,1)
dataValues=vtk.vtkFloatArray()
xCoords=vtk.vtkFloatArray()
zCoords=vtk.vtkFloatArray()

for i in range(N):
   dataValues.InsertNextTuple1(y[i])
   xCoords.InsertNextTuple1(x[i])
   zCoords.InsertNextTuple1(z[i])

curve1.SetXCoordinates(xCoords)
curve1.SetYCoordinates(dataValues)
curve1.SetZCoordinates(zCoords)

xyPlot=vtk.vtkXYPlotActor()
xyPlot.SetXValuesToArcLength()
xyPlot.AddInput(curve1)

ren = vtk.vtkRenderer()
ren.SetBackground(1,1,.9)

renWin = vtk.vtkRenderWindow()
renWin.SetSize(600, 400)
renWin.AddRenderer(ren)

ren.AddActor(xyPlot)
renWin.Render()
 

 



 
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