connecting points

Question

I have the following plot

require(ggplot2)

dtf <- structure(list(Variance = c(5.213, 1.377, 0.858, 0.613, 0.412, 0.229, 0.139, 0.094, 0.064), Component =         


        

Answer 1

This would plot the points with x as the integer values of the factor categories:

 ggplot(dtf, aes(x = as.numeric(Component), y = Variance)) +
      geom_point() + geom_line()

You can put back in the category labels with:

ggplot(dtf, aes(x = as.numeric(Component), y = Variance)) +
  geom_point() +geom_line() + scale_x_discrete(labels=dtf$Component)