[freehorse]

Until you need to plot anything more than a few hundred thousand data points, in which case ggplot is extremely slow, if it even manages.

[raffael_de]

I would argue that this is too much for any static plot. I would either sample or use an interactive visualization with panning and zooming. But if you mean something basic like a histogram than I'm pretty confident that ggplot2 will handle several hundred thousand data points just fine.

[freehorse]

Fair; so my arguments becomes "until you need anything barely interactive such as zooming in".