r - Getting historical index data for ETF's -


anyone know of free sources of historical data etfs? want load data r server analysis. have looked @ yahoo's yql api's yahoo finance tables data daily , compare based on historical prices.

thanks

try quantmod package. 

require(quantmod)  spy <- getsymbols("spy", = "2005-01-01", = "2008-12-31", auto.assign = false)  head(spy) ##            spy.open spy.high spy.low spy.close spy.volume spy.adjusted ## 2005-01-03   121.56   121.76  119.90    120.30   55748000       101.76 ## 2005-01-04   120.46   120.54  118.44    118.83   69167600       100.52 ## 2005-01-05   118.74   119.25  118.00    118.01   65667300        99.83 ## 2005-01-06   118.44   119.15  118.26    118.61   47814700       100.33 ## 2005-01-07   118.97   119.23  118.13    118.44   55847700       100.19 ## 2005-01-10   118.34   119.46  118.34    119.00   56563300       100.66

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