[R] Plot nls line on plot?

Douglas M. Hultstrand dmhultst at metstat.com
Thu Oct 8 21:39:46 CEST 2009


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), 
# want to add fit/line to plot


Douglas M. Hultstrand, MS
Senior Hydrometeorologist
Metstat, Inc. Windsor, Colorado
voice: 970.686.1253
email: dmhultst at metstat.com
web: http://www.metstat.com

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