search for: oldvari

Hello, I would like to select cases using multiple logical operations (e.g. X or Y or Z) without having to repeat the dataframe$variable within the subscript. My working code (with a single logical operator) currently looks like this: dataframe$newvariable[data$oldvariable=="X"]<-"group1" I thought this next line of code might do what I wanted, but it doesn't: dataframe$newvariable[data$oldvariable=="X" | "Y" | "Z"]<-"group1" I'd appreciate any suggestions. I've tried playing around...

Hi guys, I checked previous posts and I saw similar questions have been answered; they didn't help me solve my problem though. I am using R version 2.13.0 (2011-04-13), Platform: x86_64-pc-mingw32/x64 (64-bit) and I am having difficulties renaming variables. I tried with this command: names (oldvariable) <- 'new_variable' and now when I type in oldvariable the new name pops out in form: [1] "new_variable" BUT when I try typing in new_variable I get the message Error: object 'new_variable' not found I also tried with fix(mydata) command, but editor basically ope...

Hi! I'm using a large panel data, and now I have faced some difficulties with my analysis. The predictors are not normally distributed and there are quite many outliers (some of them are influential though). I have tried to change the logarythm, but i'm not sure, how to do that. I want also draw a plot picture in which logarythms of predictors x and y are changed. How could I do that?