Whatever it is, it's apparently a bit on the subtle side. Perhaps a
previous test loads the data, and for some reason that previous test
doesn't run for you. I couldn't find one that did, though.
From my 'make check':
running code in '../../source/tests/reg-tests-3.R' ... OK
comparing 'reg-tests-3.Rout' to
'../../source/tests/reg-tests-3.Rout.save' ... OK
And my reg-tests-3.R does not have the data() statement:
if(require(MASS)) {
fit <- lm(formula = 1000/MPG.city ~ Weight + Cylinders + Type +
EngineSize + DriveTrain, data = Cars93)
print(lm.influence(fit))
## row 57 should have hat = 1 and
resid=0.
summary(influence.measures(fit))
}
-Don
At 4:49 PM -0400 2/10/04, Rolf Turner wrote:>I just (finally!!!) got R version 1.8.1 to configure and build under
>Solaris 9 (after much travail; there were funnies in my environment
>variables that mucked things up, but that's another story).
>
>Anyhow, when I ran ``make check'' I got an error right toward the
>end. Looking in the directory ``tests'' I found that the error was
>associated with the file reg-tests-3.R, and the complaint was that it
>couldn't find the object Cars93 from the MASS package.
>
>So I edited reg-tests-3.R and stuck in the line ``data(Cars93)'':
>
>===+===+===+===+===+===+===+===+===+===+===+===+===+===+===+===+===+===+==>##
lm.influence where hat[1] == 1
>if(require(MASS)) {
>#
> data(Cars93) # <------------------------- INSERTED LINE
>#
> fit <- lm(formula = 1000/MPG.city ~ Weight + Cylinders + Type +
>EngineSize + DriveTrain, data = Cars93)
> print(lm.influence(fit))
> ## row 57 should have hat = 1 and resid=0.
> summary(influence.measures(fit))
>}
>## only last two cols in row 57 should be influential
>===+===+===+===+===+===+===+===+===+===+===+===+===+===+===+===+===+===+==>
>Then I re-ran make check, and everything seemed to go OK.
>
>I had a brief scan of the r-help mailing list archives just now and
>could find no allusions to this problem.
>
>Has anyone else encountered the problem? ***Should*** that line
>``data(Cars93)'' be in the code? If not, what is going on? If so,
>why hasn't anyone else been bitten? (Like, I mean, why me?) :-)
>
>
> cheers,
>
> Rolf Turner
> rolf at math.unb.ca
>
>P. S. Version details:
> > version
> _
>platform sparc-sun-solaris2.9
>arch sparc
>os solaris2.9
>system sparc, solaris2.9
>status
>major 1
>minor 8.1
>year 2003
>month 11
>day 21
>language R
>
>______________________________________________
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>https://www.stat.math.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
--
--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA