Plot multiple variables: label points

Question

I have a data.frame with 10-15 entries which looks like this:

      group time1     time2    time3 
1      F18  4394.500  21043.50 14949.00 
2      F25  4678.000  23727.65 15683.12 
3      F30  4909.775  23487.60 16724.40

I plot this with:

plot(variable[,2:4])

so that a plot with 3 rows and 3 lines for time1, time2 and time3 appears.

Is it somehow possible to label the data points with the values stored in group (F18, F25...)?

Take a look at the `ggplot2` package. It is much better than plotting with basic R. — Mike Flynn, Aug 17 '12 at 13:49
YOu could use `text()`. See http://stackoverflow.com/questions/3453695/adding-text-to-a-plot — Luciano Selzer, Aug 17 '12 at 14:02

score 1 · Accepted Answer · answered Aug 17 '12 at 14:20

I also recommend using ggplot2 (or lattice).

However, you can

use text to display the label texts at the given location
use colours according to the group (makes sense only if there are relatively few groups compared to
Note that plot (data.frame) actually uses pairs.

Put together:

df <- data.frame (group = sample (LETTERS[1:3], 10, replace=TRUE), 
                  x = rnorm (10), y = runif (10), z = rnorm (10))

panel.text <- function(x, y, text, ...)
  text (x, y, labels = text)

pairs (df[-1], text = df$group, lower.panel = panel.text, # label with name
    pch = 20, col = as.numeric (df$group))                # label with color

pairs panel function

God damn thank you so much!!! I used lower.panel and upper.panel both with panel.text to display all the variables. — Denise, Aug 17 '12 at 15:56

Plot multiple variables: label points

1 Answers1