[R] does there any function like sumif in excel?

[Daniel Nordlund]

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf
> Of caocheng??
> Sent: Sunday, September 28, 2008 7:26 PM
> To: R-help at r-project.org
> Subject: [R] does there any function like sumif in excel?
> 
> 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!
> 

Not sure if I am interpreting you question correctly, but you could do something like

datas <-data.frame(1:10,rnorm(10))
names(datas) <- c("A","B")
rslt <- datas[ datas[, 'A'] %in%(1:5) , ]

where datas[,'a'] %in%(1:5) is the example filter criteria that I used for the example.  What is the nature of your data, and what are your filter criteria?

Dan

Daniel Nordlund
Bothell, WA USA