I have two different data frames ( actually a set of data frames for each
class and one master one into which i want pull some data from each of the
frame in the set)
one is all students that have taken a course
so the set of data frames is
B101
B2A
B2B
B2C
etc. . .
and each one has lots of data e.g.
B101
SID zGRADE
444 -.2
458 0
587 .2
etc
and
Master
SID
587
etc
and I would like to make a field in master for each data frame
e.g. Master$B101, Master$B2A
and populate it with the zGrades from each of the data frames
the SID in Master are a wholely containted sub set of the ones in each of
the other data frames
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