code: function () {
  		var series = this,
  			data = series.data;
  
  		each(data, function (point) {
  			var graphic = point.graphic,
  				args = point.shapeArgs,
  				up = -mathPI / 2;
  
  			if (graphic) {
  				// start values
  				graphic.attr({
  					r: 0,
  					start: up,
  					end: up
  				});
  
  				// animate
  				graphic.animate({
  					r: args.r,
  					start: args.start,
  					end: args.end
  				}, series.options.animation);
  			}
  		});
  
  		// delete this function to allow it only once
  		series.animate = null;
  
  	}
docs: Animate the column heights one by one from zero