我有以下数据集
> head(names$SAMPLE_ID) [1] "Bacteria|Proteobacteria|Gammaproteobacteria|PseudomonaDales|Moraxellaceae|Acinetobacter|" [2] "Bacteria|Firmicutes|Bacilli|Bacillales|Bacillaceae|Bacillus|" [3] "Bacteria|Proteobacteria|Gammaproteobacteria|Pasteurellales|Pasteurellaceae|Haemophilus|" [4] "Bacteria|Firmicutes|Bacilli|Lactobacillales|Streptococcaceae|Streptococcus|" [5] "Bacteria|Firmicutes|Bacilli|Lactobacillales|Streptococcaceae|Streptococcus|" [6] "Bacteria|Firmicutes|Bacilli|Lactobacillales|Streptococcaceae|Streptococcus|"
Acinetobacter Bacillus Haemophilus
我试过用
library(stringr) names$sample2 <- str_match(names$SAMPLE_ID,"|.*?|")