When preparing a summary document for policy-makers, it's fairly common to include a graphic that represents how the optimal policy solution varies with two variables. It may be the result of a formal or informal optimisation analysis. Below is an example of such a graphic. The graphic partitions the chart area into contiguous areas, with each area indicating that combinations of (x,y) within that area all share an optimal policy solution.
What's the proper name for such data visualisation? And is there an easy way in Matlab (or even Excel) to generate such graphics relatively automatically from data, without having to just draw every component manually as a custom shape (because if I was going to do that, I'd just use Illustrator)?
For now, please ignore the "CALM" / "SEGREGATE" labels and arrows - I'm interested in the partitioning of the chart into separate areas, and the distinct shading and labelling of each area. I'm not assuming this graph was generated from data: it's just to illustrate the chart style, nothing more. I want to generate a similar style of graph from data. As with the graph below, some of the boundaries may be non-linear.