As I told you on a previous post, If you need specific help, please provide a proper reproducible example, also please make sure to follow this guidelines about how to make a good R related question.
R has built in documentation on packages and functions .
For example typing ?lm into your R console will open the documentation on the lm function .
Search - Be sure to search for the basic keywords of your question with your favorite search engine, Stack Overflow, and R-Help. Stack Overflo…