Brian,
By default, chartSeries() try to add a graph of the "Volume". Try running
chartSeries(Delt(M1), type='line', TA=NULL)

rgds
Paulo


On Sat, Nov 15, 2008 at 9:39 PM, Brian Lee Yung Rowe <brian@muxspace.com>wrote:

>  Hello,
>
> I am using quantmod to download FRED data and would like to view the series
> using the chartSeries function, but I am getting an error.
>
> > getSymbols('M1', src='FRED')
> > class(M1)
> [1] "xts" "zoo"
> > chartSeries(Delt(M1), type='line')
> Error in sum(poss.new) : invalid 'type' (list) of argument
> > chartSeries(Delt(M1))
> Error in sum(poss.new) : invalid 'type' (list) of argument
>
> Based on the documentation it seems that this data should be supported:
> "Courtesy of *as.xts* it can handle any object that is time-series like,
> meaning *R* objects of class *xts*, *zoo*, *timeSeries*, *its*, *ts*, *
> irts*, and more!"
>
> According to ?quantmod, I am using:
>        Version:   0.3-6
>        Revision:  433
>        Date:      2007-06-09
>
>
> Is this functionality supported or am I missing something?
>
> Thanks,
> Brian
>
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