problem with an old .RData file
When you load your old workspace, try conflicts(detail = TRUE) The workspace contains a lazyload promise from that very old version, with the name of a system function. You need to delete that promise from the workspace, and the command above should help you find which it is. One guess is 'file', in which case use 'rm(file)' .
On Sat, 28 Feb 2009, Marco Barb?ra wrote:
Dear useRs, Today I've encountered a weird unexpected behaviour. It is not a real problem for me and I can workaround it. But I'm very curious of what could have caused it. Starting an R session in a directory with an old .RData my first command was
library(MASS)
and i got
Errore in .Call("R_lazyLoadDBfetch", key, file, compressed, hook,
PACKAGE = "base") : C symbol name "R_lazyLoadDBfetch" not in DLL for
package "base"
In this session the same error appear when I try a save.image() or
simply answer "yes" when closing R (I can close only answering
"no"). But I manage to view and work with the saved environment.
The problem is strictly connected with *this* .RData file and
other .RData files saved in the same period with the same version of R
(2.1.1) work correctly.
Now, the question. I'd like to look inside this file to search for
differences with working ones, but from within R I cannot save an ascii
version of this file due to this problem, and i do not know what kind
of compression was applied (gunzip says ?not in gzip format?).
It is gzip format. But looking inside the file will not help you, even whn you know the 'R Internals' manual backwards: the format is simply not human-readable.
Is there a way of inspecting this file? thank you all for reading till now... -- Marco Barb?ra - Undergraduate student in Statistics at the University of Palermo (Italy) - Only free (as in freedom) software user - Emacs lover
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