Mathematica: How to obtain data points plotted by plot command?

Question

When plotting a function using Plot, I would like to obtain the set of data points plotted by the Plot command.

For instance, how can I obtain the list of points {t,f} P

Answer 1

Here is a very efficient way to get all the data points:

{plot, {points}} = Reap @ Plot[Last@Sow@{x, Sin[x]}, {x, 0, 4 Pi}]