[vtkusers] Rotating ImageData from vti file

[Christoffer Green]

Thank you for the reply.

Interesting, I had not realized that vtk cannot handle rotated image data
(without conversion/interpolation), that explains why there are no such
properties in the xml file.

Well, that throws quite the wrench in my plans, but thanks for letting me
know :)

BR/ Christoffer

On Thu, Apr 12, 2012 at 3:53 PM, David E DeMarle
<dave.demarle at kitware.com>wrote:

> No, vtk's image data is defined to be axis aligned.
> You have to apply filters to transform them (and change type to
> structuredgrid in the process), so the image data file formats are not
> the place to specify the transformation you want.
>
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
>
>
>
> On Wed, Apr 11, 2012 at 12:54 PM, Christoffer Green
> <christoffer.green at gmail.com> wrote:
> > My question was if it is possible to define this within the xml file
> itself.
> >
> > Thanks.
> >
> > BR/ Christoffer
> >
> >
> > On Wed, Apr 11, 2012 at 4:20 PM, Jothybasu Selvaraj <jothybasu at gmail.com
> >
> > wrote:
> >>
> >> 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 3:17 PM, Jothybasu Selvaraj <
> jothybasu at gmail.com>
> >> wrote:
> >>>
> >>> 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
> >>>>
> >>>> _______________________________________________
> >>>> Powered by www.kitware.com
> >>>>
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> >>>>
> >>>
> >>>
> >>>
> >>> --
> >>> Jothy
> >>>
> >>
> >>
> >>
> >> --
> >> Jothy
> >>
> >
> >
> > _______________________________________________
> > Powered by www.kitware.com
> >
> > Visit other Kitware open-source projects at
> > http://www.kitware.com/opensource/opensource.html
> >
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