From your description I assume you want both histograms
and the densities all on the same chart. With existing R
graphics I am not sure that there really is a simple way to
do that.
That aside, note that the hist function returns a list of
components that includes
- breaks, defining the
The code below was missing the breaks= argument to hist.
I had not noticed because coincidentally both give the same
breaks anways thus the following corrected version gives the
same plot in this case but might not in other cases.
# data
DF - structure(list(SEQ = structure(c(1, 2, 3, 4, 5, 6, 7,
Here is one more solution. This one uses lattice. Its a bit shorter
than the classic graphics solution. In the classic graphics version we used
shading and color to distinguish the bars; however, grid, and therefore
lattice, do not easily support shading (its possible to simulate it using low
Hi,
I am new to R...a recent convert from SAS.
I have a dataset that looks like this:
SEQA1A2
A532.5554.5
B25.535.5
C265.2522.2
D245.55521.56
E546.52141.52
F243.2532.56
G452.55635.56
H15.1416.54
I543.4646.56
J
Assuming dat is the name of the data frame, this should get you started:
library(lattice)
histogram(~ unlist(dat[-1]) | factor(rep(c(A1, A2), each=nrow(dat))),
panel=function(...) {
panel.histogram(...)
panel.densityplot(...)
}, type=density)
Andy
