st: generating new vars from old by cutting off a portion off the old

[mfeurey@weber.ucsd.edu]

Hi,

I have a variable that has about 8 characters per observation and I need
to take 2 characters (4th and 5th characters) and generate them as new
variables representing state codes.  So for example, the variable has as
one of its value CITNA134.  The characters I need to extract are NA, which
will be recoded as State code.  How would I go about doing this?

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