search for: rpier001

I want to predict values from an existing lm (linear model, e.g. lm.obj) result in R using a new set of predictor variables (e.g. newdata). However, it seems that because my linear models was made by calling scale() on the target predictor that predict exits with an error, "Error in scale(xxA, center = 9.7846094491829, scale = 0.959413568556403) : object 'xxA' not found". By

This evening I ran into the problem Chuck Clifton referred to in message 86 of Volume 71 Issue 9 of this list. That is, objects created by lmer change after calling pvals.fnc on that lmer object when using lme4 version 0.999375-16 and 0.999375-28. This is somewhat troublesome. The bug tracker on R-Forge (

I am experiencing unexpected behavior with the command cat under Window GUI builds of R version 2.12.0 (it does not seem to be an issue in Rterm). For example if I issue the command cat(70,"\r") I get back text that looks like Asian characters. If I highlight and copy that text, it is the text I would regularly expect, e.g. the number 70 and the prompt line. Highlighting the text

I may be making a simple error, but I've looked at the str() of the resulting objects and I can't see any obvious reason I'm having the problem I am having, so I am reaching out to the R-help group. ?I am generating a string in my code. ?When I make a slight modification (add a comma at the end using my "lastcomma" function), I can no longer successfully write that string to

Greetings, I have stumbled across some unexpected behavior (potential a bug) in, what I suspect to be R's (2.6.2 on Ubuntu Linux) t.test function; then again the problem may exist in my code. I have shutdown R and started it back up, re-run the code and re-experienced the error. I have searched on Google for the abnormal termination error message "(stderr < 10 * .Machine$double.eps *