On 03/15/2013 02:46 AM, li li wrote:
Hi alL,
I have a data frame with 4 columns: "value", "time", "group" and "id".
I would like to plot "value" vs. "time" with different colors for
different levels of "group" and
different symbols for different values of "id".
I think I could do this but I would like to see what is an easier way to
plot
the data this way.
Hi Hanna,
You will probably want to dress this up a bit:
# rustle up some data
test.df<-data.frame(value=rnorm(80)+4,time=sample(0:23,80,TRUE),
group=rep(LETTERS[1:4],each=20),id=rep(1:4,each=20))
# plot it
plot(test.df$time,test.df$value,col=test.df$group,pch=test.df$id)
Jim
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