[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

[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.

[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.

[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

Re: [R] PCA

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. The princomp command don't match with this matrix. Anybody knows a good

Re: [R] PCA

into. Joe -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Noela Sánchez Sent: Thursday, November 06, 2008 1:10 PM To: stephen sefick Cc: r-help@r-project.org Subject: Re: [R] PCA My matrix have 436 registers and 518 variables. I need to do