[Lign251] HW3 Q3

[rlevy at ling.ucsd.edu]

Kathryn Davidson wrote:
 > >  > d2norm
 > > function(x){0.75*dnorm(x, 6.35, 0.04) + (1-.75)*dnorm(x, 6.57, 0.03)}
 > >  > plot(d2norm, 6.2, 6.68)
 > >  > hist(word.means, breaks=40, prob=T)
 > >  > lines(d2norm)
 > > Error in as.vector(x, "double") : cannot coerce to vector

Ah, I got it.  The plot() function can be passed a function plus a lower +
upper limit on the values to be passed to the function, but the  lines()
function can't.  You'll want to do this:

x <- seq(6.2,6.68,by=0.01)
lines(x,d2norm(x))

I actually didn't know that you can pass plot() a function!  Thanks for
sharing  :)

Roger