[R] a question on plotting nonlinear regression
garciap at usal.es
Sun Jul 24 21:59:47 CEST 2011
Hi to all the people,
I'm having a trouble when trying to plot a quadratic function. I have the
start=list(beta1 = 1, beta2 = 1, beta3 = 1))
plot(Survival~PI,data=cubs, ylab="Survival", xlab="PI")
but the plotted line is not the quadratic one, rather it appears a number of
lines whose meaning I do not know. It seems to be an stupid trouble, but I
tried a number of alternatives and nothing works.
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