[R] Plot nls line on plot?
dwinsemius at comcast.net
Thu Oct 8 21:55:37 CEST 2009
On Oct 8, 2009, at 3:39 PM, Douglas M. Hultstrand wrote:
> I have a non-linear function (exponential) that I am trying to
> display the line with the data in a plot, is there a command similar
> to abline() for the function I created, if not what is the best way
> to display the fitted line. Example code below.
> ### Example
> z <- c(1,10,15,20,25,30,35,40,45,50,55,60)
> p <- c(.02,.08,.2,.45,1.03,2.36,5.37,12.24,27.85,63.39,144.27,328.35)
> cnt <- length(z)
> fit <- nls(p~(b*exp(m*z)), start=list(m=.1645,b=.017),
plot(z, predict(fit), type="l")
# not a very interesting exercise given the utter simplicity of the
data, but it should point the way forward.
David Winsemius, MD
West Hartford, CT
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