ggplot2 time series plotting: how to omit periods when there is no data points?

Question

I have a time series with multiple days of data. In between each day there\'s one period with no data points. How can I omit these periods when plotting the time series usin

Answer 1

First, create a grouping variable. Here, two groups are different if the time difference is larger than 1 minute:

Group <- c(0, cumsum(diff(Time) > 1))

Now three distinct panels could be created using facet_grid and the argument scales = "free_x":

library(ggplot2)
g <- ggplot(data.frame(Time, Value, Group)) + 
  geom_line (aes(x=Time, y=Value)) +
  facet_grid(~ Group, scales = "free_x")