Plotting multiple lines from multiple data frames

Question

I'm a very beginner to R. So I have 2 data files, A.dat and B.dat like:

1   101203
2   3231233  
3   213213
...

So I did

A <- read.table("A.dat", col.names = c("time","power"))
B <- read.table("B.dat", col.names = c("time","power"))

And I want to do line plot for A and B in the same system (Sorry, i can't upload image yet). Any suggestions on how to go about?

Paul Hiemstra · Accepted Answer · 2013-02-21 16:34:37Z

3

I prefer using ggplot2 (package can be downloaded from CRAN). This first requires a little data processing:

A$group = "A"
B$group = "B"
dat = rbind(A,B)

and then plotting the figure:

ggplot(aes(x = time, y = power, color = group), data = dat) + geom_line()

For base graphics, something like this should work:

plot(power~time, A)
lines(power~time, B)

answered Feb 21, 2013 at 16:34

Paul Hiemstra

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1 Comment

Just curious, did you pick the plot solution.