Two questions:
1. I have a data frame named "data1" that includes the variable "old". I want to
create a sequence of new variables in the data frame called "old.1", "old.2", ... .
I've tried a few "paste" commands, and creating a new data frame of the new variables,
all to no avail. Any advice?
2. If I have a variable in a data frame, is there quick bit of code that creates a
dummy variable for each level of that variable?
Thank you,
Ryan Moore
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