Hello,
I find strange number in my merge data set. My first coloumn consist row numbers. ----------------------------------------------------------- my.data: AbsTime RelTime PE_ID Event Delay 4238 1208514343.812086 107.153637 4 EKA 51620 ################################## Host.data: ID Host 4 4 vicky.planetlab.ntua.gr ------------------------------------------------------------ data<-read.table("my.data") mapping<-read.table("Host.data") mergeXY <- merge(data,mapping, by.x="PE_ID", by.y="ID") If I merge these data then i get: "PE_ID" "AbsTime" "RelTime" "Ereignis" "Delay" "Host" "2" 4 1208514343.81209 107.153637 "EndpointKeepAlive" " 51620 "vicky.planetlab.ntua.gr" ------------------------------------------------------- The first problem: Why is the row number "2" now? Where does this nummber come from? I think, there is a conflict between my row number from data and mapping (4238 and 4). The second problem: Why is my AbsTime: 1208514343.81209? It was 1208514343.812086. It is 1 digit less. how can I avoid this? I hope someone could answer this. Thank you in advance, Edwin ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.