Re: [R] Error of 'memory not mapped' in ff Package with VirtualBox

2011-02-02 Thread Wonsang You
Dear Prof. Brian Ripley, Thank you for your kind advice. I have to report to you that I attempted to save the ff file at a shared directory between guest OS (Linux) and host OS (Windows 7). I tried to change the working directory as an unshared folder, and then I tried the same commands. In this

Re: [R] Error of 'memory not mapped' in ff Package with VirtualBox

2011-02-02 Thread Prof Brian Ripley
This is clearly a problem occuring in the C code of the ff package. Please report to the package maintainer, Cced here (with the 'at a minimum' information requested in the posting guide, most importantly the Linux architecture and the versions involved). FWIW it works for me on sessionInfo(

[R] Error of 'memory not mapped' in ff Package with VirtualBox

2011-02-02 Thread Wonsang You
Dear R Helpers, I would like to report on an error in the ff package here. The ff package is an R package which enables us to store large data on disk systematically and have fast access to the database. I used the package in Linux as a guest OS of VirtualBox, and executed the following commands.