Sorry - scratch that. The Append Attributes item DOES claim to have the right values. According to the Information tab, there are 2 data arrays: One with scalars representing the stat data, and the other called "surface" which ranges from 0 to 1 and was created by the calculator step (see my last note). However, when I make a Contour out of this item, telling it to use "surface" to do this, it does indeed make a surface, but it inexplicably changes the stat data scalars to a completely new range of [127.863, 128.063]. Note that the Append Attributes item claims to have this same array with [0, 128.619].
Any ideas? As far as I can tell, Contour inexplicably changes the stat data scalar values to a new range. ??? Is this a bug, or am I doing something wrong? -Tom On Jun 27, 2012, at 10:36 PM, Tom Schoenemann wrote: > Hi all, > > I'm trying to display statistical values in color on a surface. The stat > values are in voxels, originally, but are translated from a NIFTI format file > to a .vtk format. I've got a binary version of the object (1's where the > object is, 0's everywhere else). Through comments on this list, I've figured > out that if I use the calculator to create a copy of the binary scalar values > (and rename them as something else, e.g., "surface"), and then use Append > Attributes to combine the stat data scalars with the surface scalars (from > the binary image), I can then use Contour to make the surface (using the > "surface" scalars) and then color this surface with the stat data scalars. > So far so good. > > Here is my problem: When I do Append Attributes, the stat data scalars all > get changed to a range of 0 to 1, even though the stat data file that was > used in Append Attributes claims to have values of: [0, 128.619]. So, what > is going on? Why is Append Attributes not appending attributes without > changing their values?? > > Any ideas? > > -Tom > > > _________________________________________________ > P. Thomas Schoenemann > > Associate Professor > Department of Anthropology > Indiana University > Bloomington, IN 47405 > Phone: 812-855-8800 > E-mail: [email protected] > > Open Research Scan Archive (ORSA) Co-Director > Consulting Scholar > Museum of Archaeology and Anthropology > University of Pennsylvania > > Homepage: http://mypage.iu.edu/~toms/ > > > > > > > > > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Follow this link to subscribe/unsubscribe: > http://www.paraview.org/mailman/listinfo/paraview _________________________________________________ P. Thomas Schoenemann Associate Professor Department of Anthropology Indiana University Bloomington, IN 47405 Phone: 812-855-8800 E-mail: [email protected] Open Research Scan Archive (ORSA) Co-Director Consulting Scholar Museum of Archaeology and Anthropology University of Pennsylvania Homepage: http://mypage.iu.edu/~toms/
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