Hi All, I am trying to do some D o E. I would like to find the optima (maxima) of a 2 dimensional lm with quadratic terms. I'm sure there is a really simple solution but i can't find it. Also would there be any way to find some sort of confidence limits on these optima? Any help most appreciated! Cheers, Ben -- View this message in context: http://r.789695.n4.nabble.com/Optimum-of-lm-tp4670674.html Sent from the R help mailing list archive at Nabble.com.
> I am trying to do some D o E. I would like to find > the optima > (maxima) of a 2 dimensional lm with quadratic terms. > I'm sure there is a really simple solution but i can't find it.At least part of this problem is solved by the rsm package; that fits a quadratic response surface and provides the location of the maximum together with some diagnostics. Steve Ellison ******************************************************************* This email and any attachments are confidential. Any use...{{dropped:8}}