locate the rows in a dataframe with some criteria
On Mar 7, 2008, at 10:50 AM, zhihuali wrote:
Hi, netters, This is probably a rookie question but I couldn't find the answer after hours of searching and trying. Suppose there'a a dataframe M: x y 10 A 13 B 8 A 11 A I want to locate the rows where x >=10 and y="A". I know how to do it to vectors by using which, but how to do it with the dataframe?
Does ?subset do what you want?
Thank you very much! Zhihua Li
Haris Skiadas Department of Mathematics and Computer Science Hanover College