Thank you for the example: it has enabled me to test a more comprehensive
fix for R-patched (soon to be 2.5.1).
You should have got a warning when saving along the lines of
Warning message:
'package:languageR' may not be available when loading in: save(list =
ls(envir = .GlobalEnv, all.names = TRUE), file = outfile,
The problem is indeed in package languageR, which is creating classes and
methods in your workspace rather than in its package. It really should
not be doing so (it uses setMethod in .First.lib), and I am Cc:ing the
maintainer in the hope that he will stop doing so.
I also find it hard to believe that
Depends: R (>= 2.4.0), methods, lattice, Matrix, coda, lme4, zipfR,
cluster, e1071, Design, Hmisc, MASS, rpart
is totally necessary, and suggest that Suggests: is used.
On Fri, 15 Jun 2007, Pfister wrote:
Dear Brian,
thanks a lot for your advice.
Prof Brian Ripley wrote:
On Fri, 15 Jun 2007, Prof Brian Ripley wrote:
I think adding the following to your new session before load() will help
findPackageEnv <- function(info)
as.environment(paste("package", "info", sep=":"))
this does not work.
more likely
findPackageEnv <- function(info) as.environment(info)
this works, if I load the languageR library before.
is correct.
will work, but if not try
findPackageEnv <- function(info) .GlobalEnv
this works unconditionally. Including that line in a local .RProfile file,
basically solves the problem.
If you send me the problematic workspace (or reproduction instructions) I
can take a closer look.
A typical session would look like this (using example data from Hox(2002)):
# from Hox (2002)
hoxpop <- read.table("http://www.ruediger-pfister.de/download/popular.dat";,
header=TRUE)
hoxpop$PUPIL <- factor(hoxpop$PUPIL)
hoxpop$SCHOOL <- factor(hoxpop$SCHOOL)
hoxpop$SEX <- factor(hoxpop$SEX)
# load languageR
library(languageR)
# do some analyses ...
# save the workspace
save.image("D:\\statistics\\MultilevelAnalysis\\lm.RData")
After quitting R, the workspace "lm.RData" will not reload.
(this workspace can be downloaded here:
http://www.ruediger-pfister.de/Downloads/lmRData.zip)
best
Rüdiger
On Fri, 15 Jun 2007, Pfister wrote:
Hello R,
To analyze multi-level data, I started learning and using lmer. So far
so wonderful. I then found some useful functions in package languageR.
But then the following problem ocurred: Whenever I load and use the
languageR package, then save the workspace - or quit R with saving the
workspace - I am unable to reload that workspace in a later session.
That is, R doesn't start at all when I try to start it by clicking the
workspace file.
Loading languageR before loading the workspace doesn't help, but yields
the message:
Error in load("D:\\statistics\\MultilevelAnalysis\\.RData") :
could not find function "findPackageEnv"
Thus, the saved workspace remains inaccessible. I not 100% certain that
languageR is the scapegoat, but my trial-and-error experiments indicate
it is.
My system is Win XP Home/Professional:
> sessionInfo()
R version 2.5.0 Patched (2007-04-24 r41305)
i386-pc-mingw32
locale:
LC_COLLATE=German_Germany.1252;LC_CTYPE=German_Germany.1252;LC_MONETARY=German_Germany.1252;LC_NUMERIC=C;LC_TIME=German_Germany.1252
attached base packages:
[1] "splines" "stats" "graphics" "grDevices" "utils"
[6] "datasets" "methods" "base"
other attached packages:
languageR rpart MASS Design survival
"0.2" "3.1-36" "7.2-34" "2.0-12" "2.31"
Hmisc e1071 class cluster zipfR
"3.3-2" "1.5-16" "7.2-34" "1.11.7" "0.6-0"
lme4 coda Matrix lattice
"0.99875-1" "0.11-2" "0.99875-2" "0.15-8"
thanks for any helpful suggestions!
best
Rüdiger
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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