does there any function like sumif in excel?
There are several ways to subset the dataframe ?select will give you one. or mydata[mydata$A=value]<- mydata then apply sum() I do not think there is one single command equivalent to sumif()
--- On Sun, 9/28/08, caocheng?? <caocheng8230 at gmail.com> wrote:
From: caocheng?? <caocheng8230 at gmail.com> Subject: [R] does there any function like sumif in excel? To: R-help at r-project.org Received: Sunday, September 28, 2008, 10:25 PM I have a data.frame datas which have two columns A and B. I want to filter column A by some values and to get a value list which contain the value in B. Best wishes! [[alternative HTML version deleted]]
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
__________________________________________________________________ Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite sites. Download it now at http://ca.toolbar.yahoo.com.