[R] what density is plotting ?

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]]

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

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()

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

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