[R-SIG-Finance] quantmod charting problems

[randomcz]

Hi,

The quantmod addTA function works well in one figure, but in the custom
layout, it generates a second plot rather overlapping the main plot. My
objective is to plot two stocks in one figure, and each of them have a set
of technical indicators.

The following codes works, but the TA argument in the chartSeries is just
not as powerful as addTA.

getSymbols(c('QQQQ','SPY')) 
layout(matrix(1:2,2,1),c(1,1),c(1,1))
chartSeries(QQQQ['2011'], layout=NULL, TA="addSMA(10);addSMA(20)")
chartSeries(SPY['2011'], layout=NULL, TA="addSMA(10);addSMA(20)")


The following codes do not work.

getSymbols(c('QQQQ','SPY')) 
layout(matrix(1:2,2,1),c(1,1),c(1,1))
chartSeries(QQQQ['2011'], layout=NULL, TA=NULL)
addSMA(10)
addSMA(20)
chartSeries(SPY['2011'], layout=NULL, TA=NULL)
addSMA(10)
addSMA(20)

Thanks,
Michael


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