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...1 1 1 1 6.63 6.52 NA 0 6 27 1 1 23 4 1 2 1 1 1 1 7.19 6.51 NA 0 I am trying to perform survival analysis but continually get errors when extracting from this data.frame: attempt 1: > X <- Surv(B27.vec$AgeOn,B27.vec$UV) > survdiff(X,rho=0,data=uvf) Error in x$terms : $ operator is invalid for atomic vectors attempt 2: > X <- Surv(B27.vec[,4],B27.vec[,15]) > survdiff(X,rho=0,data=uvf) Error in x$terms : $ operator is invalid for atomic vector attempt 3: > AO <- B27.vec[["AgeOn", exact = TRUE]] > UV <- B27.vec[...

...did I overwrite a file to in "tar" file. For example I have file "backup.tar" in my home directory, which contains two file "x.sh" and "y.sh" I made some changes to one of the file "x.sh" and want to update the " backup.tar" I use tar -uvf, but this appends at the end of the tar file, but what I want is replace the file. The only way, I know of right now is, delete the file by issuing the following command tar --delete --file=backup.tar x.sh and then adding the file again using tar -uvf backup.tar x.sh Is there a better way of d...

Hi, I have upgraded Centos from 3.x to 4.3. The upgrade apparently didn't go too bad. I had to do the upgrade remotely, and I used as a base the post at http://www.centos.org/modules/newbb/viewtopic.php?topic_id=382 I rebooted the server, and it works. But yum does not work anymore, apparently due to some conflict between rpmlibs and selinux. This is the error that I get:

Dear All After various failed attempts at using Wine I have installed this from the Mandriva 2006 DVD. I have version ?Wine 20050725?. I have installed Paint Shop Pro as follows: As a user I typed: ?Winecfg? and when in the configuration programme I went to the Application tab > Add Application button > browse to the installation executable: ?/mnt/cdrom/autorun.exe? > Open button

I am trying to create a frequency distribution and I am a bit confused. Here are the commands I have entered: > data <- read.csv(file="40609_sortedfinal.csv",head=TRUE,sep=",") > NumberOfActionsByStatus = data$STATUS > NumberOfActionsByUser = data$ETS_LOGIN > NumberOfBidOffer = data$BID_OFFER > NumberOfActionsByUser.freq = table(NumberOfActionsByUser) >