search for: dehe

Hi everybody, I am a new user of R, design package. I am trying to plot the estimated hazard ratio's of my cox regression model with the confidence intervals. But I keep getting the message:Error in `contrasts<-`(`*tmp*`, value = "contr.treatment") : contrasts can be applied only to factors with 2 or more levels I have dichotomous, categorical as well as continuous

Dear all, I am using transcan to impute missing values (single imputation). I have several dichotomous variables in my dataset, but when I try to impute the missings sometimes values are imputed that were originally not in the dataset. So, a variable with 2 values (severe weight loss or no/limited weight loss) for example coded 0 and 1, shows 3 different values after imputation (0, 1 and 2). I

Hi list, In our platform we have a lot of machines in which the system is a single disk image loaded on RAM from PXE. The problem is quite simple : if I install puppetd on the image, I will end up using the same certificate for 100 different servers with different names (the hostname is setup at boot time from dhcp) and I guess the puppetmaster won''t allow that. In other words : what