title: change the color of certain data points in r
body: <p>I was wondering that how I can change the color of certain data points in a scatter plot in R?</p>
  
  <p>So, for example, I want the data point in the 7th, 8th, and 15th row to have a red color and the rest have a black color.</p>
  
  <p>Thanks a lot for your help</p>