search for: levl

Dear R users I am trying to create some new variables for a 4401 x 30 dataframe using ddply and transform. The "id" variable i am using is a factor with 1330 levles eg bb <- function(df) {transform(df, years = study.year - min(study.year) + 1, periods = length(study.year) )} test <- ddply(x,.(id),bb) I havent copied the data to avoid clogging the list. The problem is that I get an error "cannot allocate vector of si...

Hi everyone, I'm using the Johansen framework to determine a VEC using package urca. I have estimated the corresponding VEC using likelihood ratio test for restrictions on alpha, beta or both and I have generated objects of the class cajo.test. Now I want to diagnostic tests in the model, like heteroskedasticity test, residuals normality and serial autocorrelation, but I cannot find the way

I'm trying to get my HP Office Jet Pro L7680 All-in-one to reliably scan to one of my shared folders using the machine's digital filing capability. 98 times out of 100, when I try to scan, the AIO immediately reports "Cannot connect to \\192.168.254.4\public\scan. Make sure the computer is turned on." The other 2 attempts, it works successfully. My server is currently