[R] Binned line plot

[Jeffrey Joh]

I have a scatter plot with 10000 points.  I would like to add a line that bins every 50 points and connects the average of each bin.  I'm looking for something similar to line type "m" in Stata.

With this dataset of 10000 points, I would also like to bin the data and make boxplots at certain intervals, so that I have a set of boxplots to represent each bin.  I would also like the width of each box to be proportional to the number of points in each bin.

How can I make these plots?  Is there a simple package to use?

Jeffrey