title: Draw a marker on each new point on teechart
body: <p>I am developing an application on Embarcadero XE where i receive real time data from the ethernet port and display on a teechart chart on the screen.</p>
  
  <p>The application works like an osciloscope, that is, there is a time window (10 seconds for example) of data that the chart displays, and each new incoming point overwrites what already is on screen.</p>
  
  <p>I would like your help to make a code that puts a marker on only the newest point added, so the user can keep track of which of the points on the screen is the most recent point. I don´t want all of the points with a marker, i want only the newest. </p>
  
  <p>The series being used is a fastline. </p>
  
  <p>Here is the code i'm using to add data to the chart:</p>
  
  <pre><code>//Delete already existing point
  if (Oscilografia.Series[0].Count&gt;1) then
  begin
  Oscilografia.Series[0].Delete(cont);
  end;
  //Write point
  Oscilografia.Series[0].addxy(cont,data, '', clblue);
  </code></pre>