Render or Load .vtr file using VEDO

[prithishh3]

Hi,

I have two questions:

1. Is it possible to render or load .VTR file using VEDO ?
2. How to import x,y,z data in vedo and create surface rendered or mesh rendered 3D visualization ?

[marcomusy]

Hi Prithish,

1. yes but it's very much limited to visualization as load() only creates the polygonal mesh of the geometry of the volume, e.g.:

from vedo import *
rg = load('https://www.dropbox.com/s/ib96jr4kknvvrcl/RectilinearGrid.vtr')
rg.lineWidth(0.1)
rg.printInfo()
show(rg, axes=1)

if you need to do more complicated analysis I suggest to have a look at pyvista which naturally supports this type of data set.

2. Yes - there is an example on how to reconstruct a polygonal mesh from a point cloud: https://vedo.embl.es/#gallery (search "reco")
   You can load() a point cloud from a .xyz ascii file and/or from command line, eg.
   vedo https://vedo.embl.es/examples/data/teapot.xyz
   

[prithishh3]

Thank you for the assistance.

I followed your suggestion regarding pyvista and my problem regarding .vtr file is solved.

I have used filters like contour() to render the surface and then generated the mesh. Is there any similar function in "vedo" ?

mesh = pv.read('tcombine_1.vtr')
contours = mesh.contour()

This is how I used the contour() filter in pyvista

[marcomusy]

Hi - thanks for the feedback - no, at the minute there's no support in vedo for rectilinear grid dataset.. maybe for future developments :)