title: R line segment for Time Series Graph
body: <p>I have created a graph using ggplot2 in R and want to draw a line segment that's half the length between 2 points on the x-axis. The x-axis consists of dates and when I try to draw the segment it joins the 2 dates. How can I half the length and draw the line segment?</p>
  <p>Sample Data:-</p>
  <p><a href="https://i.stack.imgur.com/vjNQr.png" rel="nofollow noreferrer">Sample Data</a></p>
  <p><a href="https://i.stack.imgur.com/fEHBH.png" rel="nofollow noreferrer">Sample Graph</a></p>