This image is 457 wafers (21 lots) stacked on top of each other. This was generated in my iPhone in just 15 seconds. Tapping a die (or an x/y coordinate) reveals the yield of that x/y across all 457 wafers.

There are over 767,000 dice involved. Semiconductor data analysis doesn’t get more efficient than this. Email Mfg Vision info{at}mfgvision{dot}com for more information and transform how your engineers work with data.