How can I create a heatmap?

I want to create a heatmap of the world, with different values for different world states (category values or intensity values) - based on some tabular data in LO Calc.

Can I do that?

Here is a guide on how to do it in MS Excel; it seems to require an add-on.

I haven’t tried this extension but have a look and see if it will do what you want, GeOOo » Extensions