search for: jtheal

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2007 Oct 18
5
Secondary Y axis title
I have the following R code to create a plot with two y axes. I am essentially trying to plot a price series with a volume series on the same graph. (i.e. to compare price with volume). I can label the first y axis successfully, but the problem is in labeling the 2nd y-axis. Essentially, the label never appears. It seems as though there is not enough margin on the right hand side of
2007 Oct 24
1
X Axis labeling with class zoo
I'm using zoo to plot multiple data series, however, I am having trouble adjusting the x-axis labeling on a multiple series plot. For example, if I create a zoo object that consists of a date series and a numerical series and then plot it, I can adjust the x axis labeling using axis.Date(1, at=seq(as.Date("1984/01/31"), as.Date("2005/10/31"), by="2
2007 Nov 22
0
Problem with tsboot
I'm trying to bootstrap some regression coefficients so that I can estimate confidence intervals, but boot is not producing results. Can anybody suggest what I'm doing wrong here? > SpecPress <- ts(rnorm(501)) > Returns <- ts(rnorm(501)) > BootData <- data.frame(cbind(SpecPress, Returns)) > boot.specpress <- function(data, indices, maxit=20){ + data <-
2008 Jul 23
1
Time series reliability questions
Hello all, I have been using R's time series capabilities to perform analysis for quite some time now and I am having some questions regarding its reliability. In several cases I have had substantial disagreement between R and other packages (such as gretl and the commercial EViews package). I have just encountered another problem and thought I'd post it to the list. In this case,