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...on a function that returns an xts (getIdvAdjSeries) it returns a matrix whose columns are just numeric value of time series in xts instead of a list of xts objects. Basically, I called the following: apply(matrix(tickers,ncol=1),1,FUN=getDivAdjSeries) getDivAdjSeries <- function(ticker) { seriesName <- paste(ticker,"Adjusted",sep="."); command <- parse(text=paste(ticker,"[,'",seriesName,"']",sep="")); s <- eval(command); dimnames(s)[[2]] <- ticker; command <- parse(text=paste(ticker,"@index",sep=...

...a. Most tutorials are about: "Download some S&P data from Yahoo and play around a little". What I want to do is, add data to an existing timeseries. Is there a possibility to add data ? For example if I have something like z <- ts(rnorm(10), start = c(1990, 1), frequency = 1) seriesNames(z) <- "vec" I want to add the next 10 years, like z <- ts(rnorm(10), start = c(2000, 1), frequency = 1) seriesNames(z) <- "vec" If I use something TSreplace the new series starting at 2000 just replaces the existing one instead of just adding another. Is there a...

...same plot but with the y-axis for one series on the right side, and also inverted (min at the top, max at the bottom). I believe that I see how to do this by using par(new = TRUE) with a second plot statement with "axes = FALSE", followed by the command "axis(side = 4, ylim = c(max(seriesname), min(seriesname))". Here is what I believe should be a smaller reproducible example of my issue: #----------------------------------------------------------------- library(quantmod) getSymbols('PCECTPI', src='FRED') is.xts(PCECTPI) # check the type of object - respons...