R help - Mar 2011 - debug R device plot

Hi there,

I was doing great with R, ggplot and tikzDevice, when suddenly it stopped
working.

I can do a plot just fine on the R online graphics device. I can also open a
tikzdevice via tikz(). However, the plot (both ggplot and R graphics plot)
call leads to the error:

"createLockFile(lockname): cannot create lock file"

I see that this is related to my OS, namely Ubuntu 10.04. I already checked
if I have write access to /var/lock via

touch /var/lock/test && rm -f /var/lock/test

which gave no errors...

Now my actual question: How can I inspect which file R wants to create? It
fails both when called from inside emacs via ESS mode and when called from
the command line. I am out of ideas...

Any advice on how to inspect what is going on here?

Thanks in advance

	[[alternative HTML version deleted]]

Not sure if you ever figured this out, but I was just directed to this post.

You need to look for a file (it may not be in your project directory) that
contains "___LOCK" in its file name and delete it.  filehash creates
this to
prevent multiple writes to the same file at the same time and somehow it did
not get removed correctly. tikzDevice uses the filehash package to cache
font metrics and it must have gotten interrupted.

-Cameron

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