Hi, I haven't actually ran code to back my guess (trying to save time), but I think that the two possible problems could be:
* the clamping of the glyph, which is turned off when you specify a scale_factor to the glyph function. More is said about this in a warning box on: http://code.enthought.com/projects/mayavi/docs/development/html/mayavi/mlab.html#adding-color-or-size-variations * varying radius by absolute rather than by radius, which you can enforce by doing: tubes.filter.vary_radius = 'vary_radius_by_absolute_scalar' HTH, Ga�l On Thu, Aug 05, 2010 at 10:21:36PM -0600, Adam Konneker wrote: > My general problem is as follows:� I have a large set of data composed of > connected points. Instead of using plot3D, I'm currently creating a > scalar_scatter structure, specifying the edges, and applying a > tube_filter. To better reflect my data, which is a large group of capsules > (cylinders capped with hemispheres) linked together into separate chains, > I would like to insert spheres (glyphs) at all the points, but I've had a > hard time matching the scaling of the tubes to the glyphs. I'd like the > spheres and the tubes to have the same radius(specified by the scalar > data) within a given chain. > So I already know about the existence of the tube_filter 'vary_radius' and > 'radius_factor' attributes, and the glyph 'scale_factor' and 'scale_mode' > attributes, but I haven't been able to piece everything together to make > it work like I want.� I think I'm getting confused about the units I use > in my x,y,z coordinates I input to the data structures and the drawing > coordinates used to make the visualizations.� Below is a snippet of my > code: > src = mlab.pipeline.scalar_scatter( > tubesX, tubesY, tubesZ, scalars) > src.mlab_source.dataset.lines = pairs > pts = mlab.points3d(tubesX, tubesY, tubesZ, scalars,scale_mode = 'scalar') > tubes = mlab.pipeline.tube(src,tube_sides = NUM_SIDES) > tubes.filter.vary_radius = 'vary_radius_by_scalar' > mlab.pipeline.surface(tubes) > Where "scalars" is an array of radii for the tubes and points in the same > units as the x,y,z coordinates I use for the position data. Currently this > gives me very thin tubes and big spheres. > If anyone could show me where I'm going wrong, I would greatly appreciate > it.� It's probably a very naive question, but I'm new to mayavi, vtk, and > python in general, so I am certainly naive. > Thanks, > Adam K > ------------------------------------------------------------------------------ > This SF.net email is sponsored by > Make an app they can't live without > Enter the BlackBerry Developer Challenge > http://p.sf.net/sfu/RIM-dev2dev > _______________________________________________ > MayaVi-users mailing list > MayaVi-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mayavi-users -- Gael Varoquaux Research Fellow, INRIA Laboratoire de Neuro-Imagerie Assistee par Ordinateur NeuroSpin/CEA Saclay , Bat 145, 91191 Gif-sur-Yvette France Phone: ++ 33-1-69-08-78-35 Mobile: ++ 33-6-28-25-64-62 http://gael-varoquaux.info
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