find a function for a random curve
Your question is very vague, so it's hard to know what to suggest. Please note the exhortation that appears at the bottom of every r-help message:
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
It is possible that splinefun() is what you are looking for.
cheers,
Rolf Turner
On 10/07/13 22:29, Xiaoyu Lu wrote:
Hi, I want to find a functional form for my data. I have tried smoothing and obtained a kinda perfect fit. However, I can only draw it but cannot call it. I am wondering that is there a way that I can store the fit as a function and apply it when needed. e.g. tranformation etc.