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0.4970
2009 Dec 24
4
How to separate a data set by its factors
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