How to plot one variable in ggplot?

Question

I\'m searching but still can\'t find an answer to a quite simple question - how can we produce a simple dot plot of one variable with ggplot2 in R?

with plot<

Answer 1

You can manually create an index vector with seq_along.

library(ggplot2)

qplot(seq_along(iris$Sepal.Length), iris$Sepal.Length)