Displaying 1 result from an estimated 1 matches for "sm08b".
2008 May 07
3
function in nls argument
Greetings R users, maybe there is someone who can help
me with this problem:
I define a function "optim.fun" and want as output the
sum of squared errors between predicted and measured
values, as follows:
optim.fun <- function (ST04, SM08b, ch2no, a, b, d, E)
{
predR <-
(a*SM08b^I(2)+b*SM08b+d)*exp(E*((1/(283.15-227.13))-(1/(ST04+273.15-227.13))))
abserr <- abs(ch2no-predR)
qnum <- quantile(abserr, probs=0.95, na.rm=T)
is.na(abserr) <- (abserr > qnum)
errsq <-...