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2007 Jun 04
0
nls problems
...conc.1, Vm, K), data=TreatIrreg, start = list(Vm = 200, K = 0.1), trace = TRUE) ## ## ERROR MESSAGE: ## Error in data.frame(conc1 = 0.02, conc.1 = c(0.02, 0.06, 0.06, 0.11, 0.11, : ## arguments imply differing number of rows: 1, 11, 12 ## # Passing arguments via 'get' weignted.MM0 <- function(Vm, K){ TI <- get("TreatIrreg") conc <- with(TI, c(conc1, conc.1)) resp <- TI$rate # pred <- (Vm * conc)/(K + conc) (resp - pred) / sqrt(pred) } Pur.wt0 <- nls( ~ weighted.MM0(Vm, K), start = list(Vm = 200, K = 0.1), trace...