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need suggestion about building formual

2 messages · Simple, Spencer Graves

Original
Simple
# 
hi,
I'm an newbie for R,I want do some fitting in R.

I wander if it is possible to write a few of equations but only one formual 
when fitting 

Currently,My problem is,in R, is there methods combination a few equations 
into one formual?
For example, 
y=f1(k);
k=f2(t);
t=f3(x);
although it is certain that the can be equations turn into one formual as 
y~f(x),but write such a complexity string make me painful.

I have searched the web and found out there were only examples with one 
formual.any suggestion? 

I hope that I have omit something.
1 day later
Spencer Graves
# 
I'm not certain what you are asking.

	  You can build expressions in R as character strings and then execute 
them.  Example:

expr <- paste("two <-", 1, "+", 1)
eval(parse(text=expr))
two

	  If this does not answer your question, PLEASE do read the posting 
guide, "www.R-project.org/posting-guide.html".  It can help increase the 
chances of a quick and useful reply.

	  spencer graves
Simple wrote: