On Nov 17, 2010, at 5:38 PM, Elliot Joel Bernstein wrote:
I'm trying to make multiple line plots, each with a different color,
using the xyplot command. Specifically, I have an NxK matrix Y and
an Nx1 matrix x. I would like the plot to contain a line for each
(x, Y[,i]), i=1:K. I know something like
xyplot(Y[,1] + Y[,2] + Y[,3] ~ x, type='l')
will work, but if Y is large, this notation can get very awkward. Is
there a way to do something simpler, along the lines of
xyplot(Y ~ x, type='l')
Perhaps:
x2 - rep(x, K)
mydat - data.frame(y =c(Y) , x = x2, id= rep(1:K, each=N)
# not exactly sure I have the N's and K's properly aligned
# but that COULD have been tested with some reproducible data
# which we are both too busy to provide.
xyplot(y ~ x, mydat, groups = id, type=l)
Thanks.
- Elliot
--
Elliot Joel Bernstein, Ph.D. | Research Associate | FDO Partners, LLC
134 Mount Auburn Street | Cambridge, MA | 02138
Phone: (617) 503-4619 | Email: elliot.bernst...@fdopartners.com
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David Winsemius, MD
West Hartford, CT
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