title: How to make scatter plots with semitransparent points in Gnuplot?
body: <p>How can I plot an image with partially transparent scatter points, just like in the picture below, with Gnuplot? The problem is that I don’t know how to set the points to be transparent.</p>
  <p><a href="https://i.stack.imgur.com/9ek6k.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9ek6k.png" alt="A scatter plot example" /></a></p>