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package require vtk
# Make an image larger by repeating the data. Tile.
# Image pipeline
vtkImageReader reader
reader ReleaseDataFlagOff
reader SetDataByteOrderToLittleEndian
reader SetDataExtent 0 63 0 63 1 93
reader SetDataSpacing 3.2 3.2 1.5
reader SetFilePrefix "$VTK_DATA_ROOT/Data/headsq/quarter"
reader SetDataMask 0x7fff
vtkImageWrapPad pad
pad SetInputConnection [reader GetOutputPort]
pad SetOutputWholeExtent -100 155 -100 170 0 92
pad ReleaseDataFlagOff
vtkImageViewer viewer
viewer SetInputConnection [pad GetOutputPort]
viewer SetZSlice 22
viewer SetColorWindow 2000
viewer SetColorLevel 1000
[viewer GetActor2D] SetDisplayPosition 150 150
viewer Render
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