Predict polynomial problem
Barry Rowlingson wrote:
On Tue, Jan 19, 2010 at 5:37 PM, Charles C. Berry <cberry at tajo.ucsd.edu>wrote:
Note: i <- 20
bquote(y ~ poly(x,.(i)))
y ~ poly(x, 20)
I see it now. bquote(y~poly(x,.(i))) gets it's 'i' there and then, sticks it in the returned expression as the value '20', so any further evaluations get poly(x,20). This is reminiscent of the way macro languages work...
And that might be why ?bquote says: "An analogue of the LISP backquote macro." :) Cheers, Peter