Chart Data "disappearing"

I have an Easy Chart component that changes appearance based on the amount of data displayed. Showing 14 hours of data looks correct:

Changing the end time to 10 pm “erases” all of the data:

Aggregation is set to Min/Max for each pen. Any ideas?

My initial guess is that your Easy Chart’s “Tag History Resolution” is too low when you want to show a lot more points. You can try increasing that or changing the “Tag History Resolution Mode” to something other than Fixed. A slight note about resolution mode, I would suggest not using “Raw” if you are trending more than one tag’s history. Another thing, be careful trying to display too much data as it can really bog down clients and designers.