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2012 Jan 17
4
breakpoints and nonlinear regression
...my script:
bp.pavlu <- breakpoints(Na ~ f(yield, a, b), h=0.15, breaks=3,
data=pavludata)
plot(bp.pavlu)
breakpoints(bp.pavlu)
But I am confused as to how to graph the piecewise functions that make up
the curve. I am not even sure if I am using breakpoints correctly. Do I just
give it a linear relationhip (Na ~ yield), instead of what I have?
Is there an easier way to calculate the confidence interval for a non-linear
regression?
I am new to R (as I've read in many questions), but I have most certainly
tried many things and am just getting frustrated with the lack of examples
for what I'd...