Hello,
Since function splines::bs returns an object of class bs in order to
read the help page for function predict you need
?predict.bs
The syntax would be
## S3 method for class 'bs'
predict(object, newx, ...)
Please read that help page and maybe you'll get the answer you need.
Hope this helps,
Rui Barradas
Em 28-05-2017 15:51, Glenn Schultz escreveu:
If is specify a spline basis as follows
knots <- c(6, 12, 22, 30, 35)
x <- c(0.0, .25, 1.0, 2.0, 3.0)
SCurve <- bs(x = x, knots = knots, intercept = FALSE, Boundary.knots =
c(0,3.5))
I would like to now get the spline value for new values of x. However,
when I use predict the new basis is returned and I would like to get the
value. Nothing has worked so far and ?predict plus examples only show
prediction from linear models. Is there a way to extract the value from
a defined spline?
Best Regards,
Glenn
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