[Rd] problems extracting parts of a summary object

From: Ross Boylan <ross_at_biostat.ucsf.edu>
Date: Mon, 22 Mar 2010 15:03:51 -0700


summary(x), where x is the output of lm, produces the expectedd display, including standard errors of the coefficients.

summary(x)$coefficients produces a vector (x is r$individual[[2]]):
> r$individual[[2]]$coefficients

tX(Intercept) tXcigspmkr tXpeld tXsmkpreve mn -2.449188e+04 -4.143249e+00 4.707007e+04 -3.112334e+01 1.671106e-01

   mncigspmkr mnpeld mnsmkpreve  3.580065e+00 2.029721e+05 4.404915e+01
> class(r$individual[[2]]$coefficients)
[1] "numeric"

rather than the expected matrix like object with a column for the se's.

When I trace through the summary method, the coefficients value is a matrix.

I'm trying to pull out the standard errors for some rearranged output.

How can I do that?

And what's going on? I suspect this may be a namespace issue.

Thanks.
Ross Boylan

P.S. I would appreciate a cc because of some mail problems I'm having.



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