Keeping native variables

- [Instructor] This lecture is about…keeping the native variables we need…after reading in the data set.…So let me remind you where we've gone…up to now in this chapter.…First, I talked about what packages there were,…and we loaded the foreign package together.…Then we made some code using the foreign package,…and downloaded the BRFSS data set,…in the .xpt format, and read it in.…After that, I explained to you…about naming conventions for data set and code.…Now, in this movie, we'll go back to the code we made…to read in the data set,…and we'll save it according to our naming conventions.…

And, we will use our data dictionary as a guide…to just keep the native variables we need…from the large BRFSS data set.…We made some code to call up the foreign library,…and read in the data.…Okay, now that we learned about naming conventions…in section three, let's name this code.…I like to name my code starting with three integers…so it sorts in order of how you run it, like I said.…I like my editing data code to start with one,…