I would like to be able to control the number of rows (aka y-axis buckets) in a heatmap. In this screenshot, you'll see the "size" field has been set to "7", but many more rows are displayed. If I set the number much higher, I get an error: "There are too many series defined". Am I interpreting "size" here completely wrong? Or is there a bug?
I'd appreciate any clues you can provide.