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Greetings Listers! the R-squared value reported by summary of lm is calculated as 1 - RSS/RSS_m where RSS_m is the residual sum of squares of a minimal model. In most cases, the minimal model is simply y = mean(y), but when a constant is left out of the model, the minimal model is y = 0. However, if you manually add a constant, R still considers y = 0 the minimal model. This also causes

Help! I accidentally saved my work as an .rdata format instead of .txt I need to somehow get it saved as a .txt file otherwise i'm really in trouble! Does anyone know how to convert .rdata to .txt files?? I also tried re-loading the file into R to see if i can re-save it but it doesnt work! i've attached it below... please help me asap! i need to turn it in as a .txt file Thanks

Thanks, Tim To get the time difference in the proper units, it's as simple as this: difftime(myfileinfo$mtime[2], myfileinfo$mtime[1], units="hours") Cheers, Warren On 11/13/06, Tim Calkins <tcalkins@gmail.com> wrote: > hardly the most efficient way to go, but consider using a substring > function to extract the time bits from your data, then reading them as POSIX > dates and using difftime. > > for example, > > > mytime <- c("G2659310 2006-310-10-55-32.txt...