I have a large data set of airport data and wish to analyze it by hour and day of the week. hour and day of the week are factors.
I can do something such as: histogram(~(Arrival.Val) | DAY*Hour, type="count", breaks=60) which displays the data the way I want it in principle, but the plots are too small to read. I added layout=c(7,6,4) to the argument list, but then I only get the first page of plots. How do I see the other pages? And I would like to add a Poisson Distribution fit to each of these plots (see below), but am clueless as to how to go about it. I would like to fit a distribution to the count data for each combination of day and hour, and I am unable to see how to do this in a vector manner. For example, I tried density((Arrival.Val | DAY*Hour), na.rm=TRUE) which does not work. I think my question boils down to "how do you replace a whole data set by its factored subsets in all of the usual R commands? I am climbing up a steep R learning curve, and so would appreciate some help. Thanks, Jim ยง ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
