gyoto software package provides General relativistic ray-tracing, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gyoto
gyoto is installed in your system.
Make ensure the gyoto package were installed using the commands given below,
$ sudo dpkg-query -l | grep gyoto *
You will get with gyoto package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Science |
| Package | gyoto |
| Version | 1.0.2-2ubuntu4 |
| Description | General relativistic ray-tracing |
| Sub Section | Science |