Can WPF render a line path with 300,000 points on it in a performance-sensitive environment?

Question

A simple XY line graph: The X axis will represent the complete range of possible rating percentages, from 0% on one end to 100% on the other. Specifically, the X value will

Answer 1

It might be worth having a look at the WPF DynamicDataDisplay library. I've been using it recently and haven't any problems with large amounts of data. It's only an early version (0.3 in fact) so there's not much documentation, but it does have samples showing how to use it. Hopefully that'll be enough to get you started.

The SimulationSample generates lots of data, so that should be a good place to start.