[vtkusers] vtkPLYWriter and obj_info

Alex Pletzer axp5530 at psu.edu
Tue Jun 30 16:22:53 EDT 2015


I noticed that vtkPLYWriter writes a "obj_info" field, an example can be 
seen below. This is causing some applications, such as the 
THREE.PLYLoader method to fail when reading PLY files produced by 

None of the documents describing the PLY format 
(https://en.wikipedia.org/wiki/PLY_%28file_format%29 or 
http://paulbourke.net/dataformats/ply/) mentions this field, although it 
is present in the bunny file from 

Hence, it would seem that for maximum portability the obj_info line 
should be removed. Is there any way one can prevent vtkPLYWriter from 
writing this line?

Thanks in advance.


Typical header from a PLY file written by VTK:

format ascii 1.0
comment VTK generated PLY File
*obj_info vtkPolyData points and polygons: vtk4.0*
element vertex 198
property float x
property float y
property float z
element face 192
property list uchar int vertex_indices

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