I'm back with yet another question. Now that this task is complete, I'm trying to apply some advanced features like controls. My first goal is to add a filter to the bottom of the timeline where I can draw to just see the dates that I want to see. I followed the guidance on the https://developers.google.com/chart/interactive/docs/gallery/controls to build in a ChartRangeFilter div. Of course, I failed (I'm way in over my head now). However, I got an error when I tried to run the program that says "[object Object] does not fit either the Control or Visualization specification.×" Is this a result of the hackery that put the multiple data tables into one or is it something else? I've attached the program in full for reference. The range filter was added within the draw function as a variable called rangeSlider. Any ideas?
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