Locking Plot Scales based on PV HOPR/LOPR feilds

[Ryan-McClanahan]

What's the problem this feature will solve? Some use cases for plots are difficult to read with auto-scaling. Readings quickly bounce around in the same range, being able to quickly understand where the readings fall in that range is necessary for the plots to be human readable.

The ranges the values can take change. Dynamically changing the ranges would reduce the maintenance needed to upkeep the pages.

Describe the solution you'd like Implementing a limits from channel check box that uses the HOPR/LOPR fields on PVs to lock the x and y axis of a plot, similar to the PyDMScaleIndicator widget pictured below