Dear S-PLUS users,
I would like to make conditional selections and changes in table, like what
is done with SQL commands, and which is also very well possible in SPSS. For
example:
I have a table with information of 10 persons. For each person is in the
first columm noted if he of she drinks alcohol: 1=yes and 2=no. In the second
column is noted what type of alcohol he or she drinks: 1=wine, 2=beer,
3=whiskey.
Now I want to perform automatically the following action:
For each person who drinks no alcohol, in the column for the type of alcohol
the value must be set to 'system missing'. My question: how can this be
automatically done? And: is some SQL-like selection and changement possible?
--------------------------
Wilbert Heeringa
University of Groningen
Faculty of Arts
Humanities Computing
|