| p.profileTraces {sfsmisc} | R Documentation |
Displays a series of plots of the profile t function and the likelihood
profile traces for the parameters in a nonlinear regression model that
has been fitted with nls and profiled with
profile.nls.
p.profileTraces(x, cex = 1,
subtitle = paste("t-Profiles and traces of ",
deparse(attr(x,"summary")$formula)))
x |
an object of class "profile.nls", typically resulting from
profile(nls(.)), see
profile.nls. |
cex |
character expansion, see par(cex =). |
subtitle |
a subtitle to set for the plot. The default now
includes the nls() formula used. |
the stats-internal stats:::plot.profile.nls plot
method just does “the diagonals”.
Andreas Ruckstuhl, R port by Isabelle Flückiger and Marcel Wolbers
profile, and nls (which has
unexported profile and stats:::plot.profile.nls methods).
require(stats)
data(Puromycin)
Treat <- Puromycin[Puromycin$state == "treated", ]
fm <- nls(rate ~ T1*conc/(T2+conc), data=Treat,
start = list(T1=207,T2=0.06))
(pr <- profile(fm)) # quite a few things..
op <- par(mfcol=1:2)
plot(pr) # -> 2 `standard' plots
par(op)
## ours:
p.profileTraces(pr)