threshold = getNumber("Threshold:", 100);

  // Get profile and display values in "Results" window
  run("Clear Results");
  profile = getProfile();

  // Set values less than threshold to NaN
  for (i=0; i<profile.length; i++)
      if (profile[i]<threshold) profile[i] = NaN;

 // Display values in "Results" window
   for (i=0; i<profile.length; i++)
      setResult("Value", i, profile[i]);
  updateResults;

  // Plot profile
  Plot.create("Profile", "X", "Value", profile);

  // Save as spreadsheet compatible text file
  //saveAs("Results", "/Users/wayne/profile.xls");