Extend Class Visualizer_Module_Frontend

I am working on a custom php project. In my project i want to extend class Visualizer_Module_Frontend so that i can override the function renderChart() but with in my custom plugin.

In my customization, my requirement is to pass custom $data (not from the database). But i want to do this with new custom plugin, so that in future i can update “Visualizer” plugin without any editing.

https://wordpress.org/plugins/visualizer/