Re: [R] ggplot: stat_smooth() and nls method
great help, thanks a lot Le 14/09/2010 21:44, Brian Diggs a écrit : On 9/11/2010 7:52 AM, Benoit Boulinguiez wrote: Hi all, Does one of you know if there is any way to combine a nls method in the stat_smooth of ggplot? Regards According to the documentation for predict.nls, it is unable to create standard errors for the predictions, so that has to be turned off in the stat_smooth call. Also, the default formula isn't valid for nls and has to be overridden, and the start values can be passed. I used geom_smooth rather than stat_smooth, but either work. library(ggplot2) DF - data.frame(x=1:20, y=rnorm(20)) ggplot(DF, aes(x=x, y=y)) + geom_smooth(method=nls, formula=y~b*x+c, se=FALSE, start=list(b=0,c=1)) + geom_point() ggplot(DF, aes(x=x, y=y)) + geom_smooth(method=nls, formula=y~sin(b*x), se=FALSE, start=list(b=1)) + geom_point() __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] ggplot: stat_smooth() and nls method
On 9/11/2010 7:52 AM, Benoit Boulinguiez wrote: Hi all, Does one of you know if there is any way to combine a nls method in the stat_smooth of ggplot? Regards According to the documentation for predict.nls, it is unable to create standard errors for the predictions, so that has to be turned off in the stat_smooth call. Also, the default formula isn't valid for nls and has to be overridden, and the start values can be passed. I used geom_smooth rather than stat_smooth, but either work. library(ggplot2) DF - data.frame(x=1:20, y=rnorm(20)) ggplot(DF, aes(x=x, y=y)) + geom_smooth(method=nls, formula=y~b*x+c, se=FALSE, start=list(b=0,c=1)) + geom_point() ggplot(DF, aes(x=x, y=y)) + geom_smooth(method=nls, formula=y~sin(b*x), se=FALSE, start=list(b=1)) + geom_point() -- Brian S. Diggs, PhD Senior Research Associate, Department of Surgery Oregon Health Science University __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] ggplot: stat_smooth() and nls method
Hi all, Does one of you know if there is any way to combine a nls method in the stat_smooth of ggplot? Regards -- - Benoit Boulinguiez Ph.D student Ecole de Chimie de Rennes (ENSCR) Bureau 1.20 Equipe CIP UMR CNRS 6226 Sciences Chimiques de Rennes Avenue du Général Leclerc CS 50837 35708 Rennes CEDEX 7 Tel 33 (0)2 23 23 80 83 Fax 33 (0)2 23 23 81 20 http://www.ensc-rennes.fr/ __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
