Re: [R] R exponential regression

oun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of muzammil786 > Sent: Wednesday, November 14, 2012 12:12 PM > To: r-help@r-project.org > Subject: Re: [R] R exponential regression > > I am having a similar problem on this data (given below). I have tried >

Re: [R] R exponential regression

if you could guide me what's wrong here. Cheers. Muzammil -- View this message in context: http://r.789695.n4.nabble.com/R-exponential-regression-tp1009449p4649474.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.

[R] Exponential regression

--- Date: Sun, 10 Jan 2010 16:44:02 -0500 From: "Murray Cooper" To: "chrisli1223" , Subject: Re: [R] R exponential regression Message-ID: <1fa457dc6fe04de4ab2541d89d2d0...@ownerc86c2419d> Content-Type:

Re: [R] R exponential regression

chrisli1223 wrote: Hi all, I have a dataset which consists of 2 columns. I'd like to plot them on a x-y scatter plot and fit an exponential trendline. I'd like R to determine the equation for the trendline and display it on the graph. Here's one way: f <- function(x,a,b) {a * exp(b * x)} #

Re: [R] R exponential regression

nd follow the rest > of the procedure described in 1). > > Hope this helps. > > Murray M Cooper, Ph.D. > Richland Statistics > 9800 N 24th St > Richland, MI, USA 49083 > Mail: richs...@earthlink.net > > - Original Message - > From: "chrisli1223&q

Re: [R] R exponential regression

.@earthlink.net - Original Message - From: "chrisli1223" To: Sent: Thursday, January 07, 2010 10:33 PM Subject: [R] R exponential regression Hi all, I have a dataset which consists of 2 columns. I'd like to plot them on a x-y scatter plot and fit an exponential trendlin

[R] R exponential regression

is will be greatly appreciated. Many thanks, Chris -- View this message in context: http://n4.nabble.com/R-exponential-regression-tp1009449p1009449.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing

Re: [R] Exponential regression (Y = exp(a*X)) and standard error of Ŷi

I am reasonably sure that the log link with a zero intercept duplicates your efforts with nls(). Take a look at this: > txt <- "X Y + 2 2.927064 + 5 14.6582 + 4 8.567706 + 3 5.007817 + 1 1.710867 + 6 25.07823 + 4 8.567706 + 7

[R] Exponential regression (Y = exp(a*X)) and standard error of Ŷi

[EMAIL PROTECTED]   Hello   First I want to implement exponential regression in R, with out constant for the following formula. Y = exp(a*X) ‘a’ is coefficient I wanted to determine. That I could do also in SPSS but my question is rather to estimate the ‘standard error of  Ŷi  at each Xi. This