[R] determining the column index and grabbing only variables with a certain string in them

Hello! I have a data set with almost 2,000 variables (called 'Data'). I want to select only a set of variables that have a certain string in them (e.g., Variable) - 'Variable.1', 'Variable.2', etc. until 'Variable.20'. 2 questions: 1. How can I determine the exact column index of a variable in

Re: [R] determining the column index and grabbing only variables with a certain string in them

1. which(Exat Name == names(Data) ## Assuming Data is your data.frame 2. grep(Variable, names(Data)) Xiaohui Dimitri Liakhovitski wrote: Hello! I have a data set with almost 2,000 variables (called 'Data'). I want to select only a set of variables that have a certain string in them