search for: l_foo

...Now I am looking for the number of the week, in which a specific value appears. I do not need the date or any other information from a row, but (due to structure of result table) the indicator i. One example: foo has two columns: Date, ID foo.all<- split(foo, cut(foo$Date, "weeks") l_foo<-length(foo.all) for (i in 1:l_foo){ foo.i<-foo.all[[i]] } Question: Given I search for ID=4. How do I find the i, in which 4 appears? Thanks in advance! -- View this message in context: http://n4.nabble.com/First-Appearance-of-value-in-splitted-matrix-tp1564964p1564964.html Sent from...