Dear community,
As it's explained I've tried the following:
model<- lm(log(v1)~log(v2)+v3, data=dat)
newax<- expand.grid(
v2 = seq(min(log(dat$v2)), max(log(dat$v2)), length=100),
v3= seq(min(dat$v3), max(dat$v3), length=100)
)
fit <- predict(model,newax)
graph <- persp(x=seq(min(log(dat$v2)), max(log(dat$v2)), length=100),
y=seq(min(dat$v3), max(dat$v3), length=100),
z= matrix(fit, 100, 100), expand=0.5, ticktype="detailed",
theta=-45)
question: I'd like to draw a line which links the fitted (x,y,z) point in
the plane, with the observed (x,y,z_o) point. How can I do it?
Thanks in advance, u...@host.com
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