There has been quite some discussion regarding DateTime axis rendering and also about OLE Automation date. I hope I haven't missed something, if so please feel free to close this.

How can dates before 30 Dec. 1899 (i.e. negative DateTime.ToOADate() values) be displayed? A WpfPlot control using v4.1.8-beta, with only this single line on of code
plot.Plot.XAxis.DateTimeFormat(true);
results in this:

Consequently, plottables containing negative x values render without ticks and labels when DateTimeFormat is set to true, but maybe I'm missing something?