Just to throw another perspective in here. I once wrote a tool for a teacher to detect copied code for CS assignments for some extra credit. Every step you take

Just to throw another perspective in here. I once wrote a tool for a teacher to detect copied code for CS assignments for some extra credit. Every step you take to dig deeper just led to more similarity -- things like normalizing variable names. At one point it looked like 80% of the class had turned in the same assignment. Granted these where toy problems. The heatmap layout you're saying people copied has been done over and over again by almost everyone who's done data visualization on time series data. Is not it possible you looked at the same StackOverflow post? Even if they where copying you I'd be ecstatic - you've inspired a bunch of people to pick up a dataset on go play around with it. That's wonderful thing, because the world needs more people doing this.