[vtkusers] Rotating ImageData from vti file

[Jothybasu Selvaraj]

Using vtkImageReslice you could rotate the vtkImageData?

You need to create a vtkMatrix4x4 for the rotation nad pass this matrix to
vtkImageReslice::SetReSliceAxes

Jothy

On Wed, Apr 11, 2012 at 3:10 PM, Christoffer Green <
christoffer.green at gmail.com> wrote:

> Hello!
>
> I have been trying to figure out if it is possible to rotate data directly
> from a imagedata xml file. Can anyone lend me a hand on how to do that?
>
> I am currently exporting data from matlab to a .vti imagedata xml file and
> importing it to paraview (that is I am writing the file without using vtk
> classes) but I
> do not know how to rotate the data. According to the
> www.vtk.org/VTK/img/file-formats.pdf file there is a Coordinate tag
> but it does not appear to have an effect when importing, but on the other
> hand its barely documented and I am really just guessing on how to use it.
>
> Currently I am testing with this data (but my actual data is much larger):
>
> <?xml version="1.0"?>
> <VTKFile type="ImageData" version="0.1" byte_order="LittleEndian">
> <ImageData WholeExtent="0 1 0 1 0 0" Origin="0.0 0.0 0.0" Spacing="0.4 0.4
> 0.4">
>  <Piece Extent="0 1 0 1 0 0">
> <Coordinates>
> <DataArray type="Float32" Name="x_coordinate" format="ascii">0.0 0.3
> 0.0</DataArray>
>  <DataArray type="Float32" Name="y_coordinate" format="ascii">0.5 0.2
> 0.0</DataArray>
> <DataArray type="Float32" Name="z_coordinate" format="ascii">1.0 0.0
> 0.0</DataArray>
>  </Coordinates>
> <PointData>
> <DataArray type="Float32" Name="MagnitudeArray" format="ascii">0.1  0.3
>  0.5  0.8</DataArray>
>  </PointData>
> </Piece>
> </ImageData>
> </VTKFile>
>
> Thanks
>
> BR/ Christoffer
>
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-- 
Jothy
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