// This macro demonstrates how to label particles by
// their size rank by using the Table.sort() function
// added in ImageJ 1.52i.

  run("Blobs (25K)");
  run("Set Measurements...", "area mean centroid");
  setAutoThreshold("Default no-reset");
  run("Analyze Particles...", "size=200 show=Overlay display clear");
  n = Table.size;
  Table.setColumn("Index", Array.getSequence(n))
  Table.sort("Area");
  for (i=0; i<n; i++) {
    Overlay.activateSelection(Table.get("Index",i));
    Roi.setName(i+1);
  }
  run("Labels...", "color=white font=14 show use bold");
  run("In [+]");