Hi Jeffrey, As a bit of a side note, data copied in html emails tends to show up poorly (since emails to the list are converted to plain text). Anyways, note the difference between:
length(mylm$residuals) length(residuals(mylm)) Accessing the residuals value from mylm is *not* quite the same as calling the residuals() function on mylm. So, if you use: cbind(residuals(mylm), mydata) you should be good. Hope that helps, Josh On Tue, Sep 14, 2010 at 6:20 AM, Stratford, Jeffrey <jeffrey.stratf...@wilkes.edu> wrote: > Hi folks, > > > > I am running a very simple regression using > > > > mylm <- lm(mass ~ tarsus, na.action=na.exclude) > > > > I would like the use the residuals from this analysis for more > regression but I'm running into a snag when I try > > > > cbind(mylm$residuals, mydata) # where my data is the original data set > > > > The error tells me that it cannot use cbind because the length of > mylm$residuals is 50 and mydata is 52. This makes sense except I > thought that na.exclude preserves length by inserting NA in residuals > where there were NA's in the orginal data ( i = 3, 20). When I ask to > see the residuals( mylm$residuals) I see 52 numbers. How can this be? > > > > I am just looking to see how I can produce a third vector with length = > 52 and NA's for i=3,20. > > > > I'm using R 2.11.1 on Windows XP and the data are below > > > > Many thanks, > > > > Jeff > > > > > > tarsus > > mass > > > > 21.5 > > 23.2 > > > 21.8 > > 22.6 > > > 20.9 > > NA > > > 21.6 > > 20.8 > > > 21.5 > > 21.5 > > > 22 > > 23.2 > > > 21.6 > > 23 > > > 22.1 > > 21 > > > 21.1 > > 21 > > > 20.6 > > 22.9 > > > 20.1 > > 21.8 > > > 22.2 > > 20.4 > > > 21.9 > > 21.5 > > > 21.1 > > 21.3 > > > 21.5 > > 20.1 > > > 19.9 > > 21.4 > > > 22.1 > > 27.3 > > > 20.1 > > 19.7 > > > 19.6 > > 16.7 > > > 20.9 > > NA > > > 20.1 > > 21.7 > > > 21.8 > > 22.3 > > > 20.9 > > 21.1 > > > 21.6 > > 20.8 > > > 22.4 > > 20.5 > > > 21.4 > > 20.4 > > > 21.4 > > 21 > > > 21.6 > > 21 > > > 21.2 > > 23.3 > > > 21.1 > > 21.9 > > > 22 > > 21 > > > 22.2 > > 21.5 > > > 20.6 > > 20.6 > > > 21.3 > > 20.5 > > > 20.6 > > 20.5 > > > 21.4 > > 20.8 > > > 21.8 > > 21.4 > > > 21.6 > > 19.6 > > > 22.4 > > 24.3 > > > 21.7 > > 20.3 > > > 21.4 > > 21.3 > > > 20.7 > > 18.2 > > > 21.3 > > 20.9 > > > 21.7 > > 20.7 > > > 22.6 > > 20 > > > 22 > > 23 > > > 18.4 > > 20 > > > 20.1 > > 20.6 > > > 19.8 > > 19.1 > > > 21.1 > > 26.3 > > > 19.8 > > 22.3 > > > 21.2 > > 22.2 > > > 19.5 > > 20.6 > > > 19.7 > > 22.7 > > > > > > > > ************************************ > > Jeffrey A. Stratford > > Department of Health and Biological Sciences > > 84 W. South Street > > Wilkes University, PA 18766 > > jeffrey.stratf...@wilkes.edu > > 570-408-4761 (office) > > 570-332-2942 (cell) > > http://web.wilkes.edu/jeffrey.stratford/ > > ************************************ > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.com/ ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.