Re: [Paraview] Saving Programmable Filter as a PNG image

2014-02-05 Thread Magician 
Hi Utkarsh,


Excellent! That works!!


Magician


On Feb 5, 2014, at 4:04, Utkarsh Ayachit utkarsh.ayac...@kitware.com wrote:

 In vtkImageData, the scalars are associated with points, not cell. Add
 the unsigned char array to the PointData, not CellData. Also note that
 you'll need to update your whole extent, image dimensions etc. since
 now you have 3x3 points and not 3x3 cells (==4x4 points).
 
 Utkarsh
 
 On Tue, Feb 4, 2014 at 11:08 AM, Magician f_magic...@mac.com wrote:
 Hi all,
 
 
 I want to save vtkImageData as a PNG image.
 The vtkImageData is generated by Programmable Filter.
 My PV version is 4.1.0.
 
 I have a small CSV data as below:
 1,0.5,0
 0.5,1,0.5
 0,0.5,1
 
 I opened the data and applied the Programmable Filter as below:
 #Output Data Set Type: vtkImageData
 #Script:
 inp = self.GetInput()
 out = self.GetOutput()
 out.SetDimensions(4, 4, 1)
 out.SetOrigin(0, 0, 0)
 out.SetSpacing(1, 1, 1)
 
 ca = vtk.vtkUnsignedCharArray()
 ca.SetName('image')
 ca.SetNumberOfComponents(3)
 ca.SetNumberOfTuples(9)
 
 out.GetCellData().SetScalars(ca)
 for i in range(3):
for j in range(3):
ca.SetTuple3(i * 3 + j, inp.GetValue(i, j).ToFloat() * 255.0, 0.0, 
 0.0)
 
 #RequestInformation Script:
 from paraview import util
 
 inp = self.GetInput()
 util.SetOutputWholeExtent(self, [0, 3, 0, 3, 0, 0])
 
 I got a 3x3 matrix image on the View.
 Then I saved the data as a PNG image, I got the warning and no image was 
 found:
 Warning: In 
 /Users/kitware/Dashboards/MyTests/NightlyMaster/ParaViewSuperbuild-Release/paraview/src/paraview/VTK/IO/Image/vtkPNGWriter.cxx,
  line 198
 vtkPNGWriter (0x11c80a540): PNGWriter only supports unsigned char and 
 unsigned short inputs
 
 How can I save the Programmable Filter as an image?
 
 
 Magician
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[Paraview] Saving Programmable Filter as a PNG image

2014-02-04 Thread Magician 
Hi all,


I want to save vtkImageData as a PNG image.
The vtkImageData is generated by Programmable Filter.
My PV version is 4.1.0.

I have a small CSV data as below:
 1,0.5,0
 0.5,1,0.5
 0,0.5,1

I opened the data and applied the Programmable Filter as below:
 #Output Data Set Type: vtkImageData
 #Script:
 inp = self.GetInput()
 out = self.GetOutput()
 out.SetDimensions(4, 4, 1)
 out.SetOrigin(0, 0, 0)
 out.SetSpacing(1, 1, 1)
 
 ca = vtk.vtkUnsignedCharArray()
 ca.SetName('image')
 ca.SetNumberOfComponents(3)
 ca.SetNumberOfTuples(9)
 
 out.GetCellData().SetScalars(ca)
 for i in range(3):
 for j in range(3):
 ca.SetTuple3(i * 3 + j, inp.GetValue(i, j).ToFloat() * 255.0, 0.0, 
 0.0)
 
 #RequestInformation Script:
 from paraview import util
 
 inp = self.GetInput()
 util.SetOutputWholeExtent(self, [0, 3, 0, 3, 0, 0])

I got a 3x3 matrix image on the View.
Then I saved the data as a PNG image, I got the warning and no image was found:
 Warning: In 
 /Users/kitware/Dashboards/MyTests/NightlyMaster/ParaViewSuperbuild-Release/paraview/src/paraview/VTK/IO/Image/vtkPNGWriter.cxx,
  line 198
 vtkPNGWriter (0x11c80a540): PNGWriter only supports unsigned char and 
 unsigned short inputs

How can I save the Programmable Filter as an image?


Magician
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Re: [Paraview] Saving Programmable Filter as a PNG image

2014-02-04 Thread Utkarsh Ayachit 
In vtkImageData, the scalars are associated with points, not cell. Add
the unsigned char array to the PointData, not CellData. Also note that
you'll need to update your whole extent, image dimensions etc. since
now you have 3x3 points and not 3x3 cells (==4x4 points).

Utkarsh

On Tue, Feb 4, 2014 at 11:08 AM, Magician f_magic...@mac.com wrote:
 Hi all,


 I want to save vtkImageData as a PNG image.
 The vtkImageData is generated by Programmable Filter.
 My PV version is 4.1.0.

 I have a small CSV data as below:
 1,0.5,0
 0.5,1,0.5
 0,0.5,1

 I opened the data and applied the Programmable Filter as below:
 #Output Data Set Type: vtkImageData
 #Script:
 inp = self.GetInput()
 out = self.GetOutput()
 out.SetDimensions(4, 4, 1)
 out.SetOrigin(0, 0, 0)
 out.SetSpacing(1, 1, 1)

 ca = vtk.vtkUnsignedCharArray()
 ca.SetName('image')
 ca.SetNumberOfComponents(3)
 ca.SetNumberOfTuples(9)

 out.GetCellData().SetScalars(ca)
 for i in range(3):
 for j in range(3):
 ca.SetTuple3(i * 3 + j, inp.GetValue(i, j).ToFloat() * 255.0, 0.0, 
 0.0)

 #RequestInformation Script:
 from paraview import util

 inp = self.GetInput()
 util.SetOutputWholeExtent(self, [0, 3, 0, 3, 0, 0])

 I got a 3x3 matrix image on the View.
 Then I saved the data as a PNG image, I got the warning and no image was 
 found:
 Warning: In 
 /Users/kitware/Dashboards/MyTests/NightlyMaster/ParaViewSuperbuild-Release/paraview/src/paraview/VTK/IO/Image/vtkPNGWriter.cxx,
  line 198
 vtkPNGWriter (0x11c80a540): PNGWriter only supports unsigned char and 
 unsigned short inputs

 How can I save the Programmable Filter as an image?


 Magician
 ___
 Powered by www.kitware.com

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 http://www.kitware.com/opensource/opensource.html

 Please keep messages on-topic and check the ParaView Wiki at: 
 http://paraview.org/Wiki/ParaView

 Follow this link to subscribe/unsubscribe:
 http://www.paraview.org/mailman/listinfo/paraview
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