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<div>The class documentation describes the matrix as representing transformations in homogenous (x, y, z, w) coordinates:</div>
<div><a href="http://www.vtk.org/doc/nightly/html/classvtkMatrix4x4.html#details">http://www.vtk.org/doc/nightly/html/classvtkMatrix4x4.html#details</a></div>
<div><a href="https://en.wikipedia.org/wiki/Homogeneous_coordinates">https://en.wikipedia.org/wiki/Homogeneous_coordinates</a></div>
<div><a href="https://andrewharvey4.wordpress.com/2008/09/29/xyzw-in-opengldirect3d-homogeneous-coordinates">https://andrewharvey4.wordpress.com/2008/09/29/xyzw-in-opengldirect3d-homogeneous-coordinates</a>/</div>
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<div>An example usage:</div>
<div><a href="http://www.vtk.org/gitweb?p=VTK.git;a=blob;f=Examples/ImageProcessing/Python/ImageSlicing.py">http://www.vtk.org/gitweb?p=VTK.git;a=blob;f=Examples/ImageProcessing/Python/ImageSlicing.py</a></div>
<div>(I think that the example has the transformation you were looking for)</div>
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<span style="font-weight:bold">From: </span>vtkusers <<a href="mailto:vtkusers-bounces@vtk.org">vtkusers-bounces@vtk.org</a>> on behalf of ʱ¹â <<a href="mailto:yihui.cao@qq.com">yihui.cao@qq.com</a>><br>
<span style="font-weight:bold">Date: </span>Wednesday, December 9, 2015 at 1:43 AM<br>
<span style="font-weight:bold">To: </span>vtkusers <<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>><br>
<span style="font-weight:bold">Subject: </span>[vtkusers] How to set the vtkMatrix4x4 in function SetResliceAxes() of vtkImageReslice<br>
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<div>Hi,</div>
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<div>In Class <span style="line-height: 1.5;">vtkImageReslice ,</span><span style="line-height: 1.5;"> <span style="font-weight: bold;">virtual void vtkImageReslice::SetResliceAxes </span></span><span style="font-weight: bold;"><span style="line-height: 1.5;">(</span><span style="line-height: 1.5;">vtkMatrix4x4
*</span><span style="line-height: 1.5;">)</span></span></div>
<div>Why Matrix:</div>
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<div>1, 0, 0, 0,</div>
<div>0, 1, 0, 0,</div>
<div>0, 0, 1, 0,</div>
<div>0, 0, 0, 1 </div>
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<div>can get a slice that parallel to the XY plane?</div>
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<div>What the <span style="line-height: 1.5;">Matrix means in </span>mathematics?</div>
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<div><span style="line-height: 1.5;">Where can I get the detailed description?</span></div>
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<div><span style="line-height: 1.5;">Thanks,</span></div>
<div>Yihui Cao</div>
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