Hello, I have a txt file that I import and want to plot a chartSeries of data.My code plus the error I receive are below: (I have installed packages TTR, fBasics, zoo, quantmod, xts)> yt=read.table("/Users/Arslan/Documents/Econ 4140/ARModel.txt",header=T)> head(yt) ytsim1 3.04497412 -0.95401593 0.25043094 -0.69580895 1.95196236 1.4400745> tail(yt) ytsim994 0.46729230995 -0.19794905996 2.25884772997 0.91227832998 -0.02632859999 -0.66917710> chartSeries(yt)Error in try.xts(x, error = "chartSeries requires an xtsible object") : chartSeries requires an xtsible objecthow do I perform chartSeries command? Thank you,Arslan [[alternative HTML version deleted]]