[R] Intersection for two curves

[Carl Witthoft]

<quote>
 >  Many people seem to be reluctant to define functions,
 > even thought I think it is a pretty small step from
 > writing scripts to writing functions.

I'm not so sure - I find most students struggle to grasp that next level 
of abstraction. Generalising from a specific task to a general function 
is a big step. Most R users aren't programmers and many have never had 
any formal training - I think writing functions well is hard to pick up 
on your own.

Hadley

</quote>

With all due respect, I fail to see how *anyone* can use R without some 
basic understanding of programming. Same goes for Mathematica and 
Matlab, just in case anyone thought I was app-biased :-) .

 From what I see both at work (hi-tech optics company) and everything my 
kids are doing in college and grad school,  it's simply unthinkable that 
someone in any branch of science or math (or finance, business, etc. for 
that matter) can operate in a modern environment without knowing some 
basic principles of programming.

Carl