Interesting Visualization Example and Request for Analysis Strategy
Thu, 11/15/2018 - 03:22 pm
I am working on some data for client and in working through some of my usual tricks to look at data, it showed a phenomena where the choice of graph type can can fool you. It is data taken from a laser displacement sensor at 100 Hz. We were testing a metrology system. Plot out the data and there are some overall trends and then some trends that look like waves. I expand part of the range for closer look and you definitely see wave structures.
Then one of my usual tests is to switch to markers or points instead of lines between points and in this case a very different structure appears. When I did this in the weekly review meeting there was great astonishment. To my eye it looks like there are 3 wave structures overlapping as well as larger longer scale wave structure. Quite interesting. I found this a great example of the need for fast and flexible data visualization, but that probably doesn't need to be said in this forum.
Now the ask: If there are 3 wave-like sources plus possibly an overall longer period wave pattern, how would recommend going about and breaking this problem down and quantifying the individual components? I have attached a copy of the data for your amusement.
Thanks in advance.
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