Re: [R] two density curves in one plot?
Hi Gabor and Dimitris, I was wondering if this question was frequent enough to be in the R FAQ under R Miscellanea and thought of something like this Q. How do I plot two curves on the same graph? A. Plot the first curve using the plot() command and add lines using lines(). For example d1 - density(rnorm(100)) d2 - density(rnorm(100)) plot(range(d1$x, d2$x), range(d1$y, d2$y), type = n, xlab = x, ylab = Density) lines(d1, col = red) lines(d2, col = blue) Alternatively one can use points() to add points to the plot. If you think this question should be in the FAQ and if you have any comments/changes to the QA then I can request the maintainer of the FAQ to include it. We could also include a lattice solution but I was thinking of not complicating things. Ritwik Sinha On 8/27/06, Gabor Grothendieck [EMAIL PROTECTED] wrote: Not sure who maintains the FAQ but its not me. On 8/27/06, Ritwik Sinha [EMAIL PROTECTED] wrote: This seems to be a common question for new commers to R, does it make sense to add it to the R FAQ page? I checked it is not currently there. Ritwik On 8/23/06, Gabor Grothendieck [EMAIL PROTECTED] wrote: With lattice graphics: library(lattice) d1 - rnorm(100) d2 - runif(100) densityplot(~ d1 + d2, auto.key = TRUE) On 8/23/06, Antje [EMAIL PROTECTED] wrote: Hello, I was wondering if I can plot two curves I get from density(data) into one plot. I want to compare both. With the following commad, I just get one curve plotted: plot( density(mydata) ) Sorry for this stupid question but I could not find a solution until now... Antje __ R-help@stat.math.ethz.ch 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-help@stat.math.ethz.ch 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. -- Ritwik Sinha Graduate Student Epidemiology and Biostatistics Case Western Reserve University http://darwin.cwru.edu/~rsinha -- Ritwik Sinha Graduate Student Epidemiology and Biostatistics Case Western Reserve University http://darwin.cwru.edu/~rsinha __ R-help@stat.math.ethz.ch 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] two density curves in one plot?
Hello, I was wondering if I can plot two curves I get from density(data) into one plot. I want to compare both. With the following commad, I just get one curve plotted: plot( density(mydata) ) Sorry for this stupid question but I could not find a solution until now... Antje __ R-help@stat.math.ethz.ch 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] two density curves in one plot?
try this: x1 - rnorm(1000) x2 - rnorm(1000) d1 - density(x1) d2 - density(x2) plot(range(d1$x, d2$x), range(d1$y, d2$y), type = n, xlab = x, ylab = Density) lines(d1, col = red) lines(d2, col = blue) I hope it helps. Best, Dimitris Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of Leuven Address: Kapucijnenvoer 35, Leuven, Belgium Tel: +32/(0)16/336899 Fax: +32/(0)16/337015 Web: http://med.kuleuven.be/biostat/ http://www.student.kuleuven.be/~m0390867/dimitris.htm - Original Message - From: Antje [EMAIL PROTECTED] To: R-help@stat.math.ethz.ch Sent: Wednesday, August 23, 2006 1:11 PM Subject: [R] two density curves in one plot? Hello, I was wondering if I can plot two curves I get from density(data) into one plot. I want to compare both. With the following commad, I just get one curve plotted: plot( density(mydata) ) Sorry for this stupid question but I could not find a solution until now... Antje __ R-help@stat.math.ethz.ch 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. Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm __ R-help@stat.math.ethz.ch 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] two density curves in one plot?
Thank you both very much. It works! __ R-help@stat.math.ethz.ch 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] two density curves in one plot?
With lattice graphics: library(lattice) d1 - rnorm(100) d2 - runif(100) densityplot(~ d1 + d2, auto.key = TRUE) On 8/23/06, Antje [EMAIL PROTECTED] wrote: Hello, I was wondering if I can plot two curves I get from density(data) into one plot. I want to compare both. With the following commad, I just get one curve plotted: plot( density(mydata) ) Sorry for this stupid question but I could not find a solution until now... Antje __ R-help@stat.math.ethz.ch 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-help@stat.math.ethz.ch 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.
