How to jitter both geom_line and geom_point by the same magnitude?

Question

I have a ggplot2 linegraph with two lines featuring significant overlap. I\'m trying to use position_jitterdodge() so that they are more visible, b

Answer 1

One solution is to manually jitter the points:

df$value_j <- jitter(df$value)

ggplot(df, aes(dimension, value_j, shape=Time, linetype=Time, group=Time)) +
  geom_line() +
  geom_point() +
  labs(x="Dimension", y="Value")

The horizontal solution for your discrete X axis isn't as clean (it's clean under the covers when ggplot2 does it since it handles the axis and point transformations for you quite nicely) but it's doable:

df$dim_j <- jitter(as.numeric(factor(df$dimension)))

ggplot(df, aes(dim_j, value, shape=Time, linetype=Time, group=Time)) +
  geom_line() +
  geom_point() +
  scale_x_continuous(labels=dimension) +
  labs(x="Dimension", y="Value")