date_seq_1[2]:(date_seq_1[2]+4) %in% info_stocks_tradedate
[1] TRUE TRUE TRUE TRUE TRUE
> info_stocks_tradedate[date_seq_1[2]:(date_seq_1[2]+4) %in% info_stocks_tradedate]
[1] "2015-06-01" "2015-06-02" "2015-06-03" "2015-06-04" "2015-06-05" "2015-06-08" "2015-06-09"
[8] "2015-06-10" "2015-06-11" "2015-06-12"
我想只取2015-06-08到2015-06-12这5天的，应该怎样取，而原日期序列是2015-06-01到2015-06-12