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<span class="Apple-style-span" style="color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; line-height: 17px; background-color: rgb(255, 255, 255); ">Dear All,</span><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "><br></div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">I have a vtkImageData object which has several scalar components set as</div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "><br></div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "> voxels->SetNumberOfScalarComponents(4);</div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "><br></div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">and set as</div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "><br></div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "> voxels->SetScalarComponentFromDouble(i,j,k,comp,0.0);</div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "><br></div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">I wish to run vtkMarchingCubes algorithm on each scalar component individually. How do I access this? When I had just one component I could simply do </div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "><br></div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "> vtkMarchingCubes *surface = vtkMarchingCubes::New();</div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "> surface->SetInput(voxels);</div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "> // etc ...</div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "><br></div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">And marching cubes would run correctly and return a very nice looking surface. But now I cannot see a way to tell vtkMarchingCubes which component to use.</div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "><br></div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">Any help with this would be most appreciated.</div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); "><br></div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">Regards,</div><div style="line-height: 17px; color: rgb(42, 42, 42); font-family: 'Segoe UI', Tahoma, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 255); ">Dan</div> </div></body>
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