I note that someone asked for help a few weeks ago regarding the ability to
drop empty panels on an xyplot.
I did not see a reply to that inquiry so I am asking for assistance with
the same problem
To prepare the data for the plotting routine, I did the following to
restrict the content of the data object to specific colonies of interest.
> Colony_HSI.df <- Colony_HSI[Colony_HSI$Colony == "NE Grossman A" |
Colony_HSI$Colony == "Loop Road" | Colony_HSI$Colony == "Otter Creek" |
Colony_HSI$Colony == "Upper Taylor Slough" |
Colony_HSI$Colony == "Tamiami West" ,]
xyplot(Colony_HSI$MEAN + Colony_HSI$TotalNests ~ Colony_HSI$Year |
Colony_HSI$Colony, lty=c(1,2), pch=c(1,9),
par.settings = graph.sets, type = "o", xlab= "Year",
ylim=c(0,1),
ylab="Mean HSI", drop.unused.levels =
lattice.getOption("drop.unused.levels"))
However this produces a plot with 22 panels, but only 5 have data in them.
Am I using the subsetting routines incorrectly? Why are there "place
holders" in the data object even after I selected for just 5 of them? How
can I build the plot including just the 5 colony names?
Steve
Steve Friedman Ph. D.
Spatial Statistical Analyst
Everglades and Dry Tortugas National Park
950 N Krome Ave (3rd Floor)
Homestead, Florida 33034
steve_fried...@nps.gov
Office (305) 224 - 4282
Fax (305) 224 - 4147
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