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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