search for: nulldat

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2008 May 07
3
function in nls argument
...qnum <- quantile(abserr, probs=0.95, na.rm=T) is.na(abserr) <- (abserr > qnum) errsq <- sum(abserr^2, na.rm=T) errsq } Then I want to optimize parameters a,b,d and E as to minimize the function output with the following: optim.model<-nls(nulldat ~ optim.fun(ST04, SM08b, ch2no, a, b, d, E), data=tower, start=list(a=-0.003,b=0.13,d=0.50, E=400), na.action = na.exclude ) were nulldat=0 At this point I get the following error message: Error in qr.default(.swts * attr(rhs, "gradient")) : NA/NaN/Inf in foreign function call (arg 1...