[R] Normal distribution

Hi, I am dealing with how to check in R if some data that I have belongs to a normal distribution or not. I am not interested in obtaining the theoreticall frequencies. I am only interested in determing if (by means of a test as Kolmogorov, or whatever), if my data are normal or not. But I have t

[R] Problems with the commands FUNCTION and DERIV to build a polynomial

Hi all, I need to automate a process in order to prepare a a big loop in the future but I have a problem with the *command function* First I fit a model with lm > model1<-lm(data2[,2]~data2[,1]+I(data2[,1]^2)+I(data2[,1]^3)+I(data2[,1]^4)) I extract the coefficients to build the polynomial. c

[R] Problems with the commands FUNCTION and DERIV to build a polynomial

Hi all, I need to automate a process in order to prepare a a big loop in the future but I have a problem with the *command function* First I fit a model with lm > model1<-lm(data2[,2]~data2[,1]+I(data2[,1]^2)+I(data2[,1]^3)+I(data2[,1]^4)) I extract the coefficients to build the polynomial. c

Re: [R] PCA

pletely trustworthy at this point, but SVD > would be worth looking into. > > Joe > > > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of Noela Sánchez > > Sent: Thursday, November 06, 2008 1:10 PM > > To:

Re: [R] PCA

dummy example that explains your problem. > Then maybe I can help you. > thanks > > Stephen > > On Thu, Nov 6, 2008 at 1:42 PM, Noela Sánchez <[EMAIL PROTECTED]> wrote: > > I need perform PCA analyst with a matrix with more variables than units. > > >

[R] PCA

I need perform PCA analyst with a matrix with more variables than units. The princomp command don't match with this matrix. Anybody knows a good command to do it? -- Noela [[alternative HTML version deleted]] __ R-help@r-project.org mailing