/usr/share/vtk/Infovis/Python/nodes.csv is in vtk-examples 5.8.0-14.1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | label,intVal,decVal
apple,3,3.1
orange,4,9.5
plum,5,7.2
grape,1,1.06
|