[R] matrix logic

r user ruser2006 at yahoo.com
Wed Jan 11 02:25:23 CET 2006

I have 2 dataframes, each with 5 columns and 20 rows.
They are called data1 and data2.I wish to create a
third dataframe called data3, also with 5 columns and
20 rows.

I want data3 to contains the values in data1 when the
value in data1 is not NA.  Otherwise it should contain
the values in data2.

I have tried afew methids, but they do not seem to
work as intended.:




Please suggest the “best” way.

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