我希望做一些看似非常简单的事情。我想在几个不同的短语中使用grepl（）命令（或类似的东西）在R中对数据帧进行子集化，而不构造循环。
例如，我想为名为Bob或Mary的人提取所有行：
## example data frame:
tmp = structure(list(Name = structure(c(6L, 8L, 9L, 7L, 2L, 3L, 10L,
1L, 5L, 4L), .Label = c("Alan", "Bob", "bob smith", "Frank",
"John", "Mary Anne", "mary jane", "Mary Smith", "Potter, Mary",
"smith, BOB"), class = "factor"), Age = c(31L, 23L, 23L, 55L,
32L, 36L, 45L, 12L, 43L, 46L), Height = 1:10), .Names = c("Name",
"Age", "Height"), class = "data.frame", row.names = c(NA, -10L
))
tmp
# Name Age Height
#1 Mary Anne 31 1
#2 Mary Smith 23 2
#3 Potter, Mary 23 3
#4 mary jane 55 4
#5 Bob 32 5
#6 bob smith 36 6
#7 smith, BOB 45 7
#8 Alan 12 8
#9 John 43 9
#10 Frank 46 10
## this doesn't work
mynames=c('bob','mary')
tmp[grepl(mynames,tmp$Name,ignore.case=T),]
任何想法都会有所帮助！