Grouped column headings for a heatmap

Is there any way to create a heatmap (or any plot)with grouped headings? In excel you would use merge cells. Please see the picture.

Answer 1

[Ayush Gupta]

There is a customizable heat map present in File Exchange, there is an option for Axes & ticks where the necessary changes can be made and grouped together for the effective result. The documentation to see how to implement this and a few examples can be accessed here.