Creating Wafer Map using Map Chart

I'm totally new to Spotfire and R Language. My goal is to create a wafer map using Map Chart; however, i'm not sure how to start. I'm just looking for ideas. Unfortunately, the provided link, has Semiconductor Wafer example, but the link is broken. I know we can create a wafer map, but not sure how.

I have a data consisting of X and Y coordinates with there respective values.

How can I start off using R language? I thought of making Shapefile using R, but then Shapefile requrired Geographical data, and obviously the wafer map has no geographical data. Any ideas?

(2) Answers