Re: [R] could not find function "Varcov" after upgrade of R?

2009-09-12 Thread Carlos Alzola
Did you type library(Hmisc,T) before loading Design? Carlos -- From: "David Freedman" <3.14da...@gmail.com> Sent: Saturday, September 12, 2009 8:26 AM To: Subject: Re: [R] could not find function "Varcov" after upgrade of R? I've had the same p

[R] SAS vs. R in web application

2009-09-08 Thread Carlos Alzola
o the server and have SAS perform the calculations there. Would this option require a multi-user SAS license? (I know, I should check with SAS Institute, but I thought I'd ask anyway. Someone in the list may have done something similar). Thanks in advance for any suggestions. Car

[R] Constrained regression

2008-03-05 Thread Carlos Alzola
#x27;day Carlos, On Mon, Mar 3, 2008 at 11:52 AM Carlos Alzola <[EMAIL PROTECTED]> wrote: > I am trying to get information on how to fit a linear regression with > constrained parameters. Specifically, I have 8 predictors , their > coeffiecients should all be non-negative and add

[R] Constrained regression

2008-03-02 Thread Carlos Alzola
subject. I searched the archives but the results were inconclusive. Could someone provide suggestions and references to the literature, please? Thank you very much. Carlos Carlos Alzola [EMAIL PROTECTED] (703) 242-6747 [[alternative HTML version deleted