plotting
I think you'll find this easiest with ggplot2: library(ggplot2) ggplot(dat, aes(x = value, y = time, color = group, symbol = id)) + geom_point() # symbol = might not be the right argument -- I'm doing this from memory or similar.... MW
On Thu, Mar 14, 2013 at 3:46 PM, li li <hannah.hlx at gmail.com> 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.
Thank you vey much.
Hanna
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