[R] piecewise linear regression

[Rolf Turner]

On 8/03/2009, at 3:54 AM, David Freedman wrote:

>
> Hi - I'd like to construct and plot the percents by year in a small  
> data set
> (d) that has values between 1988 and 2007.  I'd like to have a  
> breakpoint
> (buy no discontinuity) at 1996.  Is there a better way to do this  
> than in
> the code below?

	<snip>

It might be useful to check out the ``segmented'' package.

	cheers,

		Rolf Turner

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