On 02/28/2014 11:19 AM, David Parkhurst wrote:
I would like to plot three graphs, one above the other, of three “y”
variables that have different scales against a common Date variable, as
with the code below.
Q1. If I understand correctly, I can't use lattice graphics because my
y's have different scales. Is that correct? All the lattice or trellis
plots I've seen have common “y” scales for all plots.
I have two problems with what this code produces:
Q2. How can I get the vertical dimension of all three plots to be the
same? I know that I've made them different by using different mar
numbers, but I had to do that, I thought, to leave room for date axis
labels. I don't want to leave wasted space between the plots.
You can get what you want with:
layout(matrix(1:3,ncol=1),heights=c(1,1,1.4))
rather than mfrow. Also, try using:
# first plot
par(mar=c(0,4,4,4))
# second plot
par(mar=c(0,4,0,4)) # and yaxt="n"
...
axis(4)
# third plot
par(mar=c(4,4,0,4))
Q3. Why are my dates not coming out in the format I've specified in the
axis.Date statement?
Try DateLbls<-format(seq.Date(...),format="%m-%y")
Jim
______________________________________________
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.
