search for: ehrbar

...ould be an interesting addition for R/S, but of course I am biased. I apologize for offering up my unfinished business for others to continue; I am doing it here in the hope that the work I did put in will somehow benefit the free software movement. My talk is available at http://www.econ.utah.edu/ehrbar/arca.pdf (2.3 Kbytes). Here is the abstract as it appears at the conference web site http://stat.cs.tu-berlin.de/APL-Berlin-2000/index.htm : A graph-theoretical notation for array concatenation represents arrays as bubbles with arms sticking out, each arm with a specified number of ``fingers.'...

QUESTION: how should I do a linear regression in which there are errors in x as well as y? SUPPLEMENT: I've seen folks approach this problem by computing eigenvectors of the covariance matrix, and that makes sense to me. But I'm wondering if this has a "pedigree" (i.e. if it makes sense to folks on this list, and if it's something that has been published, so I can refer to

Hello, has anybody written a function to plot density ellipses (95%, 99% or anything) in a scatterplot? I found nothing in any package, nor in the list archives. There does seem to be a contributed package "ellipse" for S-Plus (on S-Archive), but it does a lot more than what I would need. Still, if anybody ported it to R, I'd be grateful for a link. I'm a bit afraid to try the

I've recently installed Debian/GNU Linux 2.2. The R package on the debian website and Official CD is 0.90.x, so I checked cran for a more recent deb package, with the following result. homebrew:~# apt-get install r-base Reading Package Lists... Done Building Dependency Tree... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you