I have data of polygon coordinates x,y,z:
(now I properly formatted data...)
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And when I try to do:
import mayavi.mlab as mvi
mvi.plot3d(x,y,z)
mvi.show()
It show blank plot...
But this works and show glyphs and points:
import mayavi.mlab as mvi
mvi.points3d(x,y,z)
mvi.show()
Whats going on here?
When testing your code, I have a warning:
Generic Warning: In /build/vtk6-MXHdkt/vtk6-6.3.0+dfsg1/Common/DataModel/vtkPolyLine.cxx, line 197
Coincident points in polyline...can't compute normals
Warning: In /build/vtk6-MXHdkt/vtk6-6.3.0+dfsg1/Filters/Core/vtkTubeFilter.cxx, line 243
vtkTubeFilter (0x52e7970): Could not generate normals for line. Skipping to next.
can't compute normals probably means that you have consecutive data points that are superimposed.
One solution is to add the option tube_radius=None. This way, VTK does not draw a tube that follows your data points but simply links them with a plain line, see http://docs.enthought.com/mayavi/mayavi/auto/mlab_helper_functions.html#plot3d