Drawing a spectrum analyzer using Raphael.js

drawline.js

function drawSpectrum() {
  	//RESET
		paper.clear();
		
		var array =  new Uint8Array(analyser.frequencyBinCount);
		analyser.getByteFrequencyData(array);
		audioAnimation = requestAnimationFrame(drawSpectrum);
		
		var SPECTRUMLine = "";
		
		for ( var i = 0; i < (array.length); i++ ){
			SPECTRUMLine += " L"+(i+1)+" "+(100+(200-array[i]))/2+" ";
		}
		var line = paper.path("M0 150 "+SPECTRUMLine+" L256 150");
		
		line.attr({
			'stroke-dasharray': ["-"],
            stroke: '#333333',  
            'stroke-width': 1
        });  
		
	}