Dear group kindly I have a logical data type ISINFCluster: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE 15 16 17 18 19 20 21 22 23 24 25 26 27 28 FALSE FALSE FALSE FALSE FALSE TRUE FALSE FALSE FALSE FALSE FALSE FALSE TRUE FALSE 29 30 31 32 33 34 35 36 37 38 39 40 41 42 FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE 43 44 45 46 47 48 49 50 FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE
and I want to get just number of records from those that has the value true, thus firstclass<- all[ISINCluster] where all is numeric object 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 1 1 2 1 3 1 1 2 5 4 1 6 8 1 2 1 3 3 2 13 1 4 2 4 7 1 14 1 1 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1 1 2 2 1 1 2 2 2 9 3 1 1 3 6 1 4 1 3 9 2 the firstclass containes the following firstclass 20 27 13 14 And I could not get the first row.. head(firstclass) 20 27 13 14 how can I got it? thanks in advance Ragia [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.