[R] insert missing dates

Hello I have dataframes. mydata1 -data.frame(value=c(15,20,25,30,45,50),dates=c(2005-05-25 07:00:00 ,2005-05-25 19:00:00,2005-06-25 07:00:00,2005-06-25 19:00:00 ,2005-07-25 07:00:00,2005-8-25 19:00:00)) or mydata2 -data.frame(value=c(15,20,25,30,45,50),dates=c(2005-05-25 00:00:00 ,2005-05-25

Re: [R] insert missing dates

Hello, The trick is to use seq() for date classes. First of all, when creating data.frames use stringsAsFactors=FALSE, in order not to convert them to factors. I've added this option to your data.frame() instructions. And then, mydata1$dates - as.POSIXct(mydata1$dates) mydata1b$dates -