[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,] X2 [3,]

Re: [R] converting an objects list

, Inc. 335 Central Park Square Los Alamos, NM 87544 office: 505-663-1526 / fax: 505-662-7340 cell: 513-375-3263 www.portageinc.com -Original Message- From: Jim Lemon [mailto:j...@bitwrit.com.au] Sent: Wednesday, May 05, 2010 2:54 AM To: Anthony Fristachi Cc: r-help@r-project.org Subject: Re: [R

[R] converting an objects list

Hello, I would like to convert an objects list such as objects() or ls() that outputsa101a102a104a107a109 to read within a list statement as follows : list(a101,a102,a104,a107,a109) Thanks Tony Tony Fristachi Risk Assessor Portage, Inc. 335 Central Park Square Los