Hi Jerry
Thanks for using Syncfusion products.
You can use Scatter chart as Point Chart and also you can customize the connection between the points.
There are three Connection Types are available, they are 1.Line 2.Spline 3.None (No Connections).
I have attached the sample in the link given below. Please Refer it
http://www.syncfusion.com/support/user/uploads/ScatterChart_698ebb45.zipReg : ChartOverSizedDataBindModel
Yes. You can use the ChartOverSizedDataBindModel Class for handling the large amount of datas, but it is not internally binded source, you have to customize it externally.
Regards,
Venkat.