意外と知らない?: Rの'table'コマンド
> x = as.data.frame( cbind(c("seq1","seq2","seq3"),c("libA","libB","libA")) ) > x V1 V2 1 seq1 libA 2 seq2 libB 3 seq3 libA > table( x ) V2 V1 libA libB seq1 1 0 seq2 0 1 seq3 1 0
> x = as.data.frame( cbind(c("seq1","seq2","seq3"),c("libA","libB","libA")) ) > x V1 V2 1 seq1 libA 2 seq2 libB 3 seq3 libA > table( x ) V2 V1 libA libB seq1 1 0 seq2 0 1 seq3 1 0