search for: seancarmodi

I have only just discovered the joys of the dotchart (since I am reading William Cleveland's -- Sean Carmody The Stubborn Mule http://www.stubbornmule.net http://twitter.com/seancarmody [[alternative HTML version deleted]]

I am a bit confused about the different approaches taken to recycling in plain data frames and zoo objects. When carrying out simple arithmetic, dataframe seem to recycle single arguments, zoo objects do not. Here is an example > x <- data.frame(a=1:5*2, b=1:5*3) > x a b 1 2 3 2 4 6 3 6 9 4 8 12 5 10 15 > x$a/x$a[1] [1] 1 2 3 4 5 > x <- zoo(x) > x$a/x$a[1] 1 1 >

With an ordinary plot, to customise the axis it is possible to suppress drawing the axis and then call Axis. I have been trying to change the location of the y-axis on a plot.table plot to the right hand side, but cannot even work out how to suppress drawing the labels. Here is a toy example of the sort of plot I am working with. Any suggestions as to how to have the axis on the right hand side

I have been plotting the same charts using png on a Windows machine and on a Mac OSX and the quality of the resulting images, particularly in relation to the fonts, look far superior in the plots produced on the Mac. Is there any way I can enhance the quality of the plots produced on the Windows machine? I have also tried using win.metafile on the Windows machine and the quality looks the same as

I have been experimenting with various approaches to plotting (irregular) time-series with reasonable success. One thing I have been able to do is change the number of tick marks on the axis. Consider the following simple example: > x <- as.data.frame(matrix(ncol=2,nrow=500)) > names(x) <- c("dates","values") > x$dates <- as.POSIXct(Sys.time()+1:500*86400)

Does anyone have any ideas about how you could use R to produce a fancy area plot like this one in the NY Times? http://tinyurl.com/6rr22g Regards, Sean, [[alternative HTML version deleted]]