search for: susanm

I am using ESS on a unix system for my analysis. My R environment contains a 90118 by 94 dataframe. I am trying to calculate the mean of a column in this data frame and I am getting the following error: Error: can not allocate a vector of size 704 Kb I have tried options(memory=1000000000000000000) and this does not help. when I call gc() this is what is returned > gc() used

We have a Shorewall installation which has a cron job that dynamically adds and deletes subnets to/from a zone during the day. We want to be able to list which subnets are currently in the zone at any one time. Initially we were parsing the output of "shorewall status", which works but can be very slow. Looking at the output of "shorewall status", it seems that the subnets we

I am looking at using Shorewall in a local college. There will be a default set of firewall rules, but for some lessons certain classrooms will be granted full Internet access (this will be done by the lecturer via a web interface). I am seeking suggestions for the best way to implement this under Shorewall. I think it might make sense to make each classroom a separate zone, but is there a dynamic

I am writing code in C and would like to call R's functions samin and vmmin (optimization routines: simulated annealing and BFGS) I do not understand how to create and pass in the function (as well as the extra arguments it needs) I am optimizing. I have read the R Extensions manual but it is still unclear to me. Could you give me some pointers and/or direct me to some example code which

We have a number of Windows 2000 Professional clients connected to shared drives hosted on a Linux server running Samba. Within Windows Explorer, each Samba drive is shown with a red cross on it, indicating (I believe) that the network drive is not connected. However, it can be accessed, read from and written to without problem. Why is the drive shown as disconnected, and what can be done to show

Hello list The Samba Howto Collection repeatedly asserts that by setting the sticky bit on directories any files created in those directories will be created with the owner set to that of the directory (for example, see http://samba.mirror.ac.uk/samba/docs/man/howto/AccessControls.html#id2541262). This has never worked for me. Files created inherit the group of the directory, but not the owner.