[Rd] bug and a proposed fix for model.tables. (PR#7132)

[rmh at temple.edu]

# Your mailer is set to "none" (default on Windows),
# hence we cannot send the bug report directly from R.
# Please copy the bug report (after finishing it) to
# your favorite email program and send it to
#
#       r-bugs at r-project.org
#
######################################################


Here is a bug and a proposed fix for model.tables.
I can't fully test the fix because I haven't figured out how
to make my function take precedence over the one inside the namespace.

Rich

##############################################################
## bug fix for R 1.9.1 and earlier
## donated to The R Foundation for Statistical Computing by HH
## See cc135.s for an example.
## model.tables(a1c, type="means") doesn't work because one of the columns
## of prjs is all 0, hence removed by the calling function model.tables.aov.

## assign("make.tables.aovproj", envir=environment("make.tables.aovproj"),
make.tables.aovproj <-
function (proj.cols, mf.cols, prjs, mf,
          fun = "mean", prt = FALSE, ...)
{
    tables <- vector(mode = "list", length = length(proj.cols))
    names(tables) <- names(proj.cols)
    for (i in seq(length(tables))) {
        terms <- proj.cols[[i]]
        terms <- terms[match(terms, dimnames(prjs)[[2]], 0)]  ## new line
        data <- if (length(terms) == 1) 
            prjs[, terms]
        else prjs[, terms] %*% as.matrix(rep.int(1, length(terms)))
        tables[[i]] <- tapply(data, mf[mf.cols[[i]]], get(fun, 
            mode = "function"))
        class(tables[[i]]) <- "mtable"
        if (prt) 
            print(tables[i], ..., quote = FALSE)
    }
    tables
}
## )
## <environment: namespace:stats>
##############################################################




##############################################################


tmp <- data.frame(y=rnorm(8),
                  aa=factor(c(1,1,1,1,2,2,2,2)),
                  bb=factor(c(1,1,2,2,1,1,2,2)),
                  cc=factor(c(1,2,3,4,1,2,3,4)))

tmp.aov <- aov(y ~ cc + bb/aa, data=tmp)
anova(tmp.aov)
model.tables(tmp.aov)                ## this works correctly
model.tables(tmp.aov, type="means")  ## bug in make.tables.aovproj

attr(terms(y ~ cc + bb/aa), "term.labels")  ## "bb" is present
dimnames(proj(tmp.aov))[[2]]                ## "bb" is absent
##############################################################





--please do not edit the information below--

Version:
 platform = i386-pc-mingw32
 arch = i386
 os = mingw32
 system = i386, mingw32
 status = Patched
 major = 1
 minor = 9.0
 year = 2004
 month = 04
 day = 27
 language = R

Windows NT 4.0 (build 1381) Service Pack 6

Search Path:
 .GlobalEnv, package:methods, package:stats, package:graphics, package:utils, 
file:c:/users/rmh28285/data/rmh/hh/splus.library/HH/.RData, package:lattice, package:grid, 
Autoloads, package:base