获取股票数据
> s <- getAllStocks()
> head(s$SH)
> head(s$SZ)
> getStock("SH_600000")
[1] "SH_600000"
> getStock("SZ_000001")
[1] "SZ_600000"获取期货合约数据(本地MySQL)
> getFuture(code='hc_f',constact = '1801',dbuser = 'foo',dbpwd = 'foo')
[1] "hc_f_1801"
> getContacts('hc_f','root','111111') #return top 15 volumn寻找价格波段高低点
> r <- getTrends(symbol = instrument,interval=c(3,4))