Did you try ImageAppendComponents?<div><br></div><div><a href="http://www.vtk.org/doc/nightly/html/classvtkImageAppendComponents.html">http://www.vtk.org/doc/nightly/html/classvtkImageAppendComponents.html</a></div><div><br>
</div><div><a href="http://www.vtk.org/doc/nightly/html/classvtkImageAppendComponents.html"></a>- Wes<br><br><div class="gmail_quote">On Fri, Jul 31, 2009 at 12:16 PM, Adam Wiktor <span dir="ltr"><<a href="mailto:awiktor@emory.edu">awiktor@emory.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi All,<br><br>I am fairly new to VTK, so please bear with me. I'm
trying to visualize blood flow in the aorta from MRI scans. The
velocity data is stored in three separate vti images, for the x-, y-
and z- components. Each image has a scalar variable 'DICOMImage' which
is the speed in that direction. I need to combine the components into
the overall velocity, which I will then import into paraview to add
streamlines and other things. <br>
<br>My original thought was to use the vtkArrayCalculator to multiply
each image by the unit vector (for the x component, for example, it
would be DICOMImage*iHat). I would then need to combine these vectors
into the velocity with another calculator, just doing x+y+z. I might be
able to simplify this by just using one calculator that did x*iHat
+ y*jHat + z*kHat, but I don't know how to change the variable names
from DICOMImage to x, y, and z so that the calculator can distinguish
between them.<br>
<br>First of all, I'd like to know if there's an easier way of doing this.<br><br>If
there isn't a more straight-forward way, then the main thing I need to
figure out is how to get the final calculator to use the three
different inputs. What would be the best way to do that? <br>
<br>Thanks for any help you can give!<br><font color="#888888"><font color="#888888"><br>- Adam</font>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Wesley D. Turner, Ph.D.<br>Kitware, Inc.<br>R&D Engineer<br>28 Corporate Drive<br>Clifton Park, NY 12065-8662<br>Phone: 518-371-3971 x120<br>
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