Hi, R-help:
I am a new user of R and am very pleased with R's features. Here I have
one question regarding data frame manipulation. I have a data frame look
like this:
Fruit Condition
1 Orange Good
2 Orange Bad
3 Orange Good
4 Orange Good
5 Orange Bad
6 Apple Good
7 Apple Bad
8 Apple Good
9 Apple Good
10 Apple Bad
11 Apple Good
12 Apple Bad
13 Mango Good
14 Mango Good
15 Mango Bad
and I like to remove fruit group(s) with three or more "Bad" pieces. In
this case, I want to remove Apple group. Is there an easy way to count
the "Good" and "Bad" in each group then remove the ones that meet the
criteria?
Thanks for your help.
Sean
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