Thank you for writing.
The axes of RadChartView have a defined type of the values they can display. You cannot mix these values. For your case it looks like you have two separate charts. One is with DateTimeContinuous X-axis and Linear Y-axis. The other is with Categorical X-axis and Linear Y-axis. Although the two Y-axes are Linear they show data in different dimension (one is voltage the other is percentage). For this setup you would need a multi-axis chart setup. You can find more info on how to create multi-axes chart in our online documentation.
On your second concern the scatter series are plotted against two linear axes, while the other cartesian series are plotted against a linear and a categorical axis. Date time axes are also categorical.
I hope this clears things up. If you need further information, I would be glad to provide it.
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