Install vtk6 by entering the following commands in the terminal:
sudo apt update sudo apt install vtk6
Description:
Binaries for VTK6
The Visualization Toolkit (VTK) is an open-source software system for 3D computer graphics, image processing, and visualization. . This package provides binaries for VTK6
Homepage: http://www.vtk.org/
Version: 6.3.0+dfsg1-11build1
Section: universe/interpreters