[R] How to use a matrix in pcurve?

Hi, Everyone, I want to calculate the principal curve of a points set. First I read the points'coordinate with function scan, then converted it to matrix with the function matrix, and fit the curve with function principal.curve. Here is my data in the file bmn007.data: 0.023603

Re: [R] How to use a matrix in pcurve?

Sun, On 24 Oct 2004, at 10:24, XP Sun wrote: Hi, Everyone, I want to calculate the principal curve of a points set. First I read the points'coordinate with function scan, then converted it to matrix with the function matrix, and fit the curve with function principal.curve. Here is my data in the

[R] lme4, GLMM, var-cov matrix of fixed effects

Dear all, 1. How do I compute the fixed-effects var-cov matrix from a GLMM object (lme4 package) fitted with the Laplace method? details: the vcov method for GLMM objects does not seem to work in this case: returns a 0 * 0 matrix: fm1 - GLMM(immun ~ kid2p + mom25p + ord, + family =

RE: [R] Plotting Bivariate Normal Data

Dear Sarah, If the data are allegedly bivariate normal, then they are probably two vectors, not one. Assuming that this is the case, I know of nothing quite as neat as a univariate QQ plot to check visually for bivariate normality (perhaps someone else has a suggestion here), but you could

RE: [R] JDBC DB access in R

Hi. One thing you might also want to consider is the RDBI/RdbiPgSQL suite at GRASS found at http://grass.itc.it/statsgrass/r_and_dbms.html. These are PostgreSQL drivers. For MySQL, just use the DBI and RMySQL found on CRAN at http://cran.at.r-project.org/src/contrib/PACKAGES.html. I primarily

[R] From soundcard to R?

Is it possible to input data from sound card of the computer to R? What do I need to know about my computer (it's linux pc)? Can I get some real time graphical information this way, spektrum for example? Atte __ [EMAIL PROTECTED] mailing list

[R] Installing packages on Debian linux

Hello R users! I am running R on windows and linux (Debian). Until recently I found the function install.packages('R-package_name') which is just great and simple. It is standard for installing packages for me under windows. Under Debian linux I got used to installing packages vie apt-get

Re: [R] Plotting Bivariate Normal Data

John Fox wrote: Dear Sarah, If the data are allegedly bivariate normal, then they are probably two vectors, not one. Assuming that this is the case, I know of nothing quite as neat as a univariate QQ plot to check visually for bivariate normality (perhaps someone else has a suggestion here), but

[R] OT: Linux Trojan Warning - Red Hat and Fedora Users

Greetings all, Just a heads up to the masses that there is a new Linux trojan warning this weekend. An e-mail purporting to come from Red Hat's Security Team contains information on a vulnerability in fileutils, with a URL to a site that contains a patch. The site is

Re: [R] Installing packages on Debian linux

Gorjanc Gregor wrote: same/similiar packaging system (dependencies, ...) as Debian. Is it wise to mix all three methods? Mixing R CMD and install.packages() doesn't pose any problems, AFAIK, but mixing any of them with apt-get does. The problem is that apt-get doesn't know what you're doing