search for: xrank

Hi, I would like to create a new variable that would be the rank of a continuous variable within each level of a grouping variable. Say the first level of the grouping variable has 5 observations, I'd like them ranked from one to five and a new variable would hold the rank value (one to five). So forth for each level of the grouping variable. I'm quite new with R and cannot

Hi: I intend to use RDTSC to make some time tests in Xen guest WinXP. However, from Intel Developer''s Manual I noticed that RDTSC will cause VMExit if "RETSC exiting" VM-Execution control field is 1. So I wonder: How to query VM-Execution control field in a programmable way? BTW: On Intel Developer''s Manual, it mentioned a method using IA32_VMX_PROCBASED_CTLS MSR,