Ah yes - you're right, and its also a tiny number (10^-18) Thanks...
Martin Patrick Burns wrote: > I think it is saying that there is only one (unique) > number in 'x1'. If that is right, then you could do: > > lm(y1 ~ x1 - 1) > > Patrick Burns > [EMAIL PROTECTED] > +44 (0)20 8525 0696 > http://www.burns-stat.com > (home of S Poetry and "A Guide for the Unwilling S User") > > Martin Waller wrote: > >> Hello, >> >> I'm doing an lm(y1~x1), no NAs in them, both of length 283. >> >> I get out however and 'NA' for the estimate of x1 and summary gives: >> >> Residuals: >> Min 1Q Median 3Q Max >> -0.1998309 -0.0447269 -0.0006252 0.0390933 0.3141687 >> >> Coefficients: (1 not defined because of singularities) >> Estimate Std. Error t value Pr(>|t|) >> (Intercept) -0.021291 0.003994 -5.331 2.01e-07 *** >> x1 NA NA NA NA >> --- >> Signif. codes: 0 .***. 0.001 .**. 0.01 .*. 0.05 '.' 0.1 ' ' 1 >> >> Residual standard error: 0.06719 on 282 degrees of freedom >> >> >> I don't understand why x1 can't be defined because of singularities - >> is it trying to tell me something about the data and what can I do >> about it? >> >> Thanks for any help, >> >> Martin >> >> ______________________________________________ >> 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. >> >> >> >> > > ______________________________________________ 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.
