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inputdata
2012 May 11
0
NLS sensitivity to start= values or poles in data range
...col="red")
# Generate starting values for nls per NIST process
initmodel <- (depsubset ~ I(indsubset^1)
+ I(indsubset^2)
+ I(indsubset^3)
+ I(-1 * indsubset^1 * depsubset)
+ I(-1 * indsubset^2 * depsubset)
+ I(-1 * indsubset^3 * depsubset))
InputDatalm <- lm(initmodel)
summary(InputDatalm)
fitted.values(InputDatalm)
nlsstart <- coef(InputDatalm)
names(nlsstart) <- c("A0", "A1", "A2", "A3", "B1", "B2", "B3")
nlsstart <- as.list(nlsstart)
attach(nlsstart...