R语言从quantmod获得沪深300数据，求Adjusted的log return时出错，求解！

小谢O(∩_∩)O

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收藏 2016-03-03

悬赏 8 个论坛币未解决

>getSymbols("000300.ss",from="2008-01-03",to="2016-03-02")
[1] "000300.SS"
Warning message:
In download.file(paste(yahoo.URL, "s=", Symbols.name, "&a=", from.m,  :
  downloaded length 109492 != reported length 200
>getSymbols("AAPL",from="2008-01-03",to="2016-03-02")
[1] "AAPL"
Warning message:
In download.file(paste(yahoo.URL, "s=", Symbols.name, "&a=", from.m,  :
  downloaded length 149743 != reported length 200

>AAPL.rtn=diff(log(AAPL $ AAPL.Adjusted))
>HS300=diff(log(000300.ss $ 000300.ss.Adjusted))

Error: unexpected symbol in "HS300=diff(log(000300.ss"
> head(AAPL)
         AAPL.Open AAPL.High AAPL.Low AAPL.Close AAPL.Volume AAPL.Adjusted
2008-01-03 195.41 197.39 192.69    194.93 210516600    25.78894
2008-01-04 191.45 193.00 178.89    180.05 363958000    23.82034
2008-01-07 181.25 183.60 170.23    177.64 518048300    23.50150
2008-01-08 180.14 182.46 170.80    171.25 380954000    22.65611
2008-01-09 171.30 179.50 168.30    179.40 453470500    23.73435
2008-01-10 177.58 181.00 175.41    178.02 370743800    23.55177
> head(`000300.SS`)
         000300.SS.Open 000300.SS.High 000300.SS.Low 000300.SS.Close 000300.SS.Volume 000300.SS.Adjusted
2008-01-03       5422.03       5422.03    5422.03       5422.03             0          5422.03
2008-01-04       5483.65       5483.65    5483.65       5483.65             0          5483.65
2008-01-07       5556.59       5556.59    5556.59       5556.59             0          5556.59
2008-01-08       5528.05       5528.05    5528.05       5528.05             0          5528.05
2008-01-09       5613.76       5613.76    5613.76       5613.76             0          5613.76
2008-01-10       5672.15       5672.15    5672.15       5672.15             0          5672.15
>

在用HS300数据的时候提示错误Error: unexpected symbol in "HS300=diff(log(000300.ss"
用苹果（AAPL）的数据的时候不出错。
求大神指教

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