Re: [R] what density is plotting ?
Hi Carrie, the output is defined by you; density() only creates the function which you need to plot using the plot() function. When you call plot(density(x)) you get the output on the screen. You need to use pdf() if you want to create a pdf file, png() for creating a png file or postscript if you like ps; there are many others. Ralf On Thu, Jun 24, 2010 at 10:35 PM, Carrie Li carrieands...@gmail.com wrote: Hi everyone, I am confused regarding the function density. suppose that there is a sample x of 100 data points, and plot(density(x)) gives it's pdf ? or it's more like histogram only ? thanks for any answering Carrie [[alternative HTML version deleted]] __ 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-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] what density is plotting ?
Hello, Ralf, Sorry I was being clear. I mean probability density function like normal f(x)=(1/2*pi*sd )*exp() something like that . Sorry about the confusion Carrie On Thu, Jun 24, 2010 at 10:43 PM, Ralf B ralf.bie...@gmail.com wrote: Hi Carrie, the output is defined by you; density() only creates the function which you need to plot using the plot() function. When you call plot(density(x)) you get the output on the screen. You need to use pdf() if you want to create a pdf file, png() for creating a png file or postscript if you like ps; there are many others. Ralf On Thu, Jun 24, 2010 at 10:35 PM, Carrie Li carrieands...@gmail.com wrote: Hi everyone, I am confused regarding the function density. suppose that there is a sample x of 100 data points, and plot(density(x)) gives it's pdf ? or it's more like histogram only ? thanks for any answering Carrie [[alternative HTML version deleted]] __ 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. [[alternative HTML version deleted]] __ 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] what density is plotting ?
The density function works empirically based on your data. It makes no assumption about an underlying distribution. Ralf On Thu, Jun 24, 2010 at 10:48 PM, Carrie Li carrieands...@gmail.com wrote: Hello, Ralf, Sorry I was being clear. I mean probability density function like normal f(x)=(1/2*pi*sd )*exp() something like that . Sorry about the confusion Carrie On Thu, Jun 24, 2010 at 10:43 PM, Ralf B ralf.bie...@gmail.com wrote: Hi Carrie, the output is defined by you; density() only creates the function which you need to plot using the plot() function. When you call plot(density(x)) you get the output on the screen. You need to use pdf() if you want to create a pdf file, png() for creating a png file or postscript if you like ps; there are many others. Ralf On Thu, Jun 24, 2010 at 10:35 PM, Carrie Li carrieands...@gmail.com wrote: Hi everyone, I am confused regarding the function density. suppose that there is a sample x of 100 data points, and plot(density(x)) gives it's pdf ? or it's more like histogram only ? thanks for any answering Carrie [[alternative HTML version deleted]] __ 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-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] what density is plotting ?
?density Or http://en.m.wikipedia.org/wiki/Kernel_density_estimation?wasRedirected=true Ralf B ralf.bie...@gmail.com wrote: The density function works empirically based on your data. It makes no assumption about an underlying distribution. Ralf On Thu, Jun 24, 2010 at 10:48 PM, Carrie Li carrieands...@gmail.com wrote: Hello, Ralf, Sorry I was being clear. I mean probability density function like normal f(x)=(1/2*pi*sd )*exp() something like that . Sorry about the confusion Carrie On Thu, Jun 24, 2010 at 10:43 PM, Ralf B ralf.bie...@gmail.com wrote: Hi Carrie, the output is defined by you; density() only creates the function which you need to plot using the plot() function. When you call plot(density(x)) you get the output on the screen. You need to use pdf() if you want to create a pdf file, png() for creating a png file or postscript if you like ps; there are many others. Ralf On Thu, Jun 24, 2010 at 10:35 PM, Carrie Li carrieands...@gmail.com wrote: Hi everyone, I am confused regarding the function density. suppose that there is a sample x of 100 data points, and plot(density(x)) gives it's pdf ? or it's more like histogram only ? thanks for any answering Carrie [[alternative HTML version deleted]] __ 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-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. --- Jeff NewmillerThe . . Go Live... DCN:jdnew...@dcn.davis.ca.usBasics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/BatteriesO.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...1k --- Sent from my phone. Please excuse my brevity. __ 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.
