[R] model fitting

Greetings, Any suggestions for approaching the fitting of the function y = b/exp(a*x) + c*x + y0 where a, b, c, and y0 are unknown constants and y and x are variables in a give dataset. Thanks Tony [[alternative HTML version deleted]]

[R] binding data.frames with sequential names

Hello, I have data frames X1 to X19 I want a simple way to bind them as the next run(s) will generate many more sequential data frames. I tried the following with i = 19: > my.list <- as.list(paste("X",1:i,sep="")) > new.data <- do.call("rbind", my.list) > new.data [,1] [1,] "X1" [2,

Re: [R] converting an objects list

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[R] converting an objects list

Hello, I would like to convert an objects list such as objects() or ls() that outputs"a101""a102""a104""a107""a109" to read within a list statement as follows : list(a101,a102,a104,a107,a109) Thanks Tony