[vtkusers] Nicola Creati <ncreati at inogs.it>

[Nicola Creati]

Hello,
I used the win32 compiled VTK and python. I'm sure that this is the source
of my problem. I also tried to create my plot using a loop to add points and
vertexes in vtkPolydata without using vtkMaskPoints and I got the same
result. I will try to compile a 64 bit VTK and check if it solve the
problem.
Thank you,

Nicola



L.J. van Ruijven wrote:
> 
> Hello Nicola,
> 
> I am using VTK 5.2.0 on windows XP 64 and I developed programs with TCL
> 8.6 and Visual Studio C++. But I never encountered this problem. I
> regularly use vtkPolyData, tkPolydataMapper, vtkActor, and vtkRenderer. So
> I think they are not really suspect.  But that leaves a lot of potential
> error sources open. So I suggest you try to narrow down the error.
> 
> It is a pity that I never managed to compile Python for the X64 platform,
> so I cannot test what would happen on my machine. Is there somebody else
> who is able to test this? That might indicate whether the hardware is
> responsible.
> Also, I never used vtkMaskPoints. Maybe you can check whether the dataset
> returned by mask is correct? You might use a vtkDataSetWriter to write the
> result to your harddisk, and check the result. 
> 
> Finally, you did not mention this explicitly, but did you use the 64 bit
> versions of Python and VTK with Windows x64 or did you use the same
> executables as you used on the win32 platform?
> 
> Leo.
> 
> 
> 
>>  Message: 10
>>  Date: Fri, 23 Jan 2009 14:57:03 +0100
>>  From: Nicola Creati <ncreati at inogs.it>
>>  Subject: [vtkusers] No data shown on windows xp 64 bit
>>  To: vtkusers at vtk.org
>>  Message-ID: <4979CCAF.2080802 at inogs.it>
>>  Content-Type: text/plain; charset="iso-8859-15"; Format="flowed"
>>  
>>  Hello,
>>  I'm developing a simple application that use VTK to show laser data 
>> (x, 
>>  y, z, i). I generally work on both linux and windows computer 32 and 
>> 64 
>>  bit. My application perfectly work on Linux and windows xp 
>> professional 
>>  32 bit but I have some problems on windows xp 64 bit if i have to 
>> show 
>>  large dataset. On winXp 64 bit the same code show nothing on the 
>> screen 
>>  and I got no error messages at all. I have the following hardware:
>>  
>>  Sun UltraWorkstation 24
>>  Intel Core2 Duo E6850 3.0Ghz
>>  5 Gb RAM DDR2-667
>>  Nvidia Qadro FX 1700 512 Mb driver version 169.21.
>>  
>>  I have also tried to update the video driver but the problem is not 
>>  solved and I generally get a decrease of 3d performance with newer 
>> video 
>>  drivers.
>>  I'm working with VTK 5.2.1.
>>  I have tried to trace the mouse position on screen and even if i see 
>> 
>>  nothing I got printed the coordinate of my dataset. It seems that the 
>> 
>>  data are there but not shown..... I do not know what is happening.
>>  This is an example script that on my 64 bit windows xp pc replicate 
>> the 
>>  problem (on linux 32 and 64 and windows xp 32 bit it works perfectly):
>>  
>>  import vtk
>>  import numpy as N
>>  from numpy_support import numpy_to_vtk
>>  
>>  # Convert numpy array to vtk array
>>  xyz = N.ascontiguousarray(N.random.random((9000000,3)))
>>  vtk_xyz = numpy_to_vtk(xyz)
>>  scalar = N.ascontiguousarray(N.random.random((9000000,1)))
>>  vtk_scalar = numpy_to_vtk(scalar)
>>  
>>  # create Point vtk object
>>  points = vtk.vtkPoints()
>>  points.SetData(vtk_xyz)
>>  
>>  #Create Polydata
>>  pd = vtk.vtkPolyData()
>>  pd.SetPoints(points)
>>  pd.GetPointData().SetScalars(vtk_scalar)
>>  
>>  # Add a mask
>>  mask = vtk.vtkMaskPoints()
>>  mask.SetInput(pd)
>>  mask.GenerateVerticesOn()
>>  mask.SetOnRatio(1)
>>  
>>  # Create the mapper
>>  m = vtk.vtkPolyDataMapper()
>>  m.SetInput(mask.GetOutput())
>>  m.ScalarVisibilityOn()
>>  
>>  # Create the actor
>>  a = vtk.vtkActor()
>>  a.SetMapper(m)
>>  a.GetProperty().SetRepresentation(0)
>>  
>>  # Add to renderer
>>  ren = vtk.vtkRenderer()
>>  ren.AddActor(a)
>>  
>>  renWin = vtk.vtkRenderWindow()
>>  renWin.AddRenderer(ren)
>>  rwi = vtk.vtkRenderWindowInteractor()
>>  rwi.SetRenderWindow(renWin)
>>  
>>  rwi.Initialize()
>>  rwi.Render()
>>  rwi.Start()
>>  
>>  
>>  Thanks.
>>  
>>  Nicola
>>  
>>  -- 
>>  Nicola Creati
>>  Istituto Nazionale di Oceanografia e di Geofisica Sperimentale - OGS 
>> www.inogs.it Dipartimento di Geofisica della Litosfera Geophysics of 
>> Lithosphere Department CARS (Cartography and Remote Sensing) Research 
>> Group http://www.inogs.it/Cars/ Borgo Grotta Gigante 42/c 34010 
>> Sgonico - Trieste - ITALY ncreati at ogs.trieste.it
>>  off.   +39 040 2140 213
>>  fax.   +39 040 327307
>>  
> 
> 
> begin:vcard
> n:Ruijven van;L.J.
> fn:L.J. van Ruijven
> tel;fax:++31 20 5669524
> tel;work:++31 20 5665357
> url:www.acta.nl
> org:ACTA;Functional Anatomy
> adr:;;Meibergdreef 15;1105 AZ Amsterdam;;;Netherlands
> version:2.1
> email;internet:L.J.vanRuijven at amc.uva.nl
> end:vcard
> 
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