[R] person-level to person-period xfm

2009-11-19 Thread Robert Terwilliger
multiple rows, one for each repeated measure value. Is there a quick-and-dirty way to do this transformation? Many thanks, -- Robert Terwilliger Biomedical Physicist Laboratory of Neurocognitive Development Western Psychiatric Institute and Clinic University of Pittsburgh Medical Center Loeffler

[R] structural equation modeling

2009-10-28 Thread Robert Terwilliger
Dear R-help, I am interested in using structural equation modeling. Just getting started with it, but I'm looking for suggestions for packages. As an aside, what's the best way for looking for packages at CRAN? -- Robert Terwilliger Biomedical Physicist Laboratory of Neur

[R] help with longitudinal data plot

2008-08-07 Thread Robert Terwilliger
19 100.00 ... Any help would be appreciated. Regards, Robert Terwilliger __ 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

[R] r^2 for SSasymp?

2008-07-14 Thread Robert Terwilliger
Dear R Help, At the risk of sounding naïve, is there a way for obtaining something resembling an r^2 value for the fit obtained using SSasymp? I have read ?SSasymp and looked through the archives but to no avail. Many thanks, Robert Terwilliger __ R

[R] binning data

2008-01-14 Thread Robert Terwilliger
I would like to 'bin' a vector of of values (>10 values) in much the same way as 'hist' does for plotting, but I just want a result with the bins and the frequencies. Is there a 'quick and dirty' (built-in) way to do this, or do I need to write some code?

[R] OS X binary: 32 or 64-bit?

2008-01-10 Thread Robert Terwilliger
3321675776) failed (error code=3) R(2081,0xa000d000) malloc: *** error: can't allocate region R(2081,0xa000d000) malloc: *** set a breakpoint in szone_error to debug My Mac is 64-bit, however, I'm wondering if R is compiled as a 32-bit app? Many