drawArrow.ijm

gistfile1.js

// Draw Arrow
// Jean-Christophe Taveau
// Inspired by J Mutterer 
// Post published in IJ mailing list - Mar 24, 2010; 9:12am Re: Drawing Arrows with a Macro? 
// http://crazybiocomputing.com/blogspot.com

function drawArrow(x0,y0,x1,y1,dummy)
{
  setLineWidth(1);
  eval('script','img = IJ.getImage();a= new Arrow('+x0+','+y0+','+x1+','+y1+');a.setHeadSize(6);a.setStrokeWidth(1);a.setStyle(Arrow.FILLED);img.setRoi(a);');
  run("Draw");
}