相关疑难解决方法(0)

您好我使用RBloomberg库返回以下数据帧:

> tt <- bdh(conn, secs, "last price", "20110501")
> tt
          ticker       date last price
1  EURUSD Curncy 2011-05-01         NA
2  EURUSD Curncy 2011-05-02     1.4830
3  EURUSD Curncy 2011-05-03     1.4825
4  EURUSD Curncy 2011-05-04     1.4827
5  EURUSD Curncy 2011-05-05     1.4539
6  EURUSD Curncy 2011-05-06     1.4316
7  EURUSD Curncy 2011-05-07         NA
8  EURUSD Curncy 2011-05-08         NA
9  USDZAR Curncy 2011-05-01         NA
10 USDZAR Curncy 2011-05-02     6.6090
11 USDZAR Curncy 2011-05-03     6.6394
12 USDZAR Curncy 2011-05-04     6.6837
13 USDZAR Curncy 2011-05-05     6.7250 …