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== Interacting with a scatterplot: the Identify function ==

The < identify > function enables to click on a scatterplot and thus identify its points interactively.

{{{

# let's generate the x and y vectors
x.nv <- c (1, 2, 3, 4, 2, 3)
y.nv <- c (4, 2, 1, 4, 1, 5)

# let's plot them
plot (x = x.nv, y = y.nv, xlab = "x", ylab = "y")

# let's use identify
identify (x = x.nv, y = y.nv)
# output: the point closest to the mouse click coordinates

}}}