[R] length of a density curve (or any curve)

Hello R users, When I type d - density(MyData$x) I obtain a density object I can plot, But I wonder if there is a way to easily compute the length of the density curve ? ( I imagine I could compute the distances between the 512 equally spaced points using their x and y, but does it exist a

Re: [R] length of a density curve (or any curve)

hi Sylvain, did you try ?density regards milton On Fri, Dec 4, 2009 at 7:19 AM, sylvain willart sylvain.will...@gmail.comwrote: Hello R users, When I type d - density(MyData$x) I obtain a density object I can plot, But I wonder if there is a way to easily compute the length of the

Re: [R] length of a density curve (or any curve)

Yes, sure (and I just did it again) but I can't see an answer... did I miss sthg ? regards, SW 2009/12/4 milton ruser milton.ru...@gmail.com: hi Sylvain, did you try ?density regards milton On Fri, Dec 4, 2009 at 7:19 AM, sylvain willart sylvain.will...@gmail.com wrote: Hello R

Re: [R] length of a density curve (or any curve)

True enough -- ?density does not address the issue of computing the length pf the curve! One simple way of implementing the idea you first thought of would be on the following lines: d - density(MyData$x) sum(sqrt(diff(d$x)^2 + diff(d$y)^2)) which simply sums the lengths of the

Re: [R] length of a density curve (or any curve)

Thanks for your answer, @Dennis Murphy: no, I don't know the functionnal form, this is purely empirical data @ Ted Harding: Thank you for your lines of code, they are actually a pretty smart way... SW 2009/12/4 Ted Harding ted.hard...@manchester.ac.uk: True enough -- ?density does not address