On 7 December 2012 at 23:45, Johannes Ranke wrote:
| > | > stackloss
| > | Fehler: Objekt 'stackloss' nicht gefunden
| > | > data(stackloss)
| > | Warning message:
| > | In data(stackloss) : data set 'stackloss' not found
| > | no data sets found
|
| > | Any idea? Let me know what I can do to help.
| >
| > Hm.
| >
| > Sounds like we'd need an arm box to do development on to look at the R code
| > / metadata ?
|
| (sorry for the delay, I was on the phone for quite a while)
|
| Well, I believe I could let you log into my NAS if I I configure my router
| appropriately :) It is running Debian stable and the abovementioned sid
| chroot.
|
| Meanwhile, I have had a go at debugging using debug(). The problem appears in
| the function fileExt defined in the very beginning of data().
|
| fileExt <- function(x) {
| db <- grepl("\\.[^.]+\\.(gz|bz2|xz)$", x)
| ans <- sub(".*\\.", "", x)
| ans[db] <- sub(".*\\.([^.]+\\.)(gz|bz2|xz)$", "\\1\\2",
| x[db])
| ans
| }
|
| Guess what, adding perl=TRUE to the second line gives the right extension.
Ohhh, well done, that rings a bell regarding other arm* bugs with R.
| I just verified that after
|
| > fix(data)
|
| and doing the abovementioned change using my favorite text editor
|
| I can load the data using
|
| > data(stackloss)
|
| However, I do not fully understand what the code does (the first line results
| in db being FALSE, and I do not see how it makes sense later to index ans
| using FALSE...)
|
| So I have the feeling maybe it should be discussed upstream why regular
| expressions on arm behave so different (broken) and what should be done about
| it (use PCRE, considering Adam Conrads viewpoint on #679180 ?).
R Core is not too responsive these days to postings on r-devel. Maybe we
should crystalize this into a written bug report for their bugzilla system?
I did file something there and it did get picked up...
arm* may matter more with Chromebooks and all that bringing volume to the
architecture. People may hack more on it...
Dirk
| Beware that lazyloading still does not work after this workaround.
|
| Cheers,
|
| Johannes
|
|
|
|
|
|
--
Dirk Eddelbuettel | e...@debian.org | http://dirk.eddelbuettel.com
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