Clearing Graphics and Sprites problem

Question

Thanks to Andrei1 for his help previously. Another problem in the same application. Just having problem clearing sprites and graphics. Commented out the clear statements below. Ends up showing nothing. Do I need to create a separate function for initial and then updated values?? Thanks in advance for any help. Hope the code is not to long.

Answer 1

I think you need to listen to CHANGE event on user input items. Events may be different though:
ComboBox - CHANGE,
InputText - has CHANGE or TextEvent.TEXT_INPUT - depending on your needs
CheckBox and RadioButton dispatch CHANGE event
So the code can be as following:
import flash.display.Sprite;
import flash.geom.Point;
stop();
//Set up global variables
//Set initial selectable Values
rbMonth.selected = true;
rbRisk1.selected = true;
rbYears10.selected = true;
// declare color of graph
var graphColor:uint = 0xCC6600;
//Set variable Group Names
var timeValue:Object = rbMonth.group;
var riskValue:Object = rbRisk1.group;
var yearsValue:Object = rbYears10.group;
var answerCurr:Array = new Array();
// it may array of points
var points:Array = new Array();
var gr:Graphics = this.graphics;
gr.lineStyle(1, graphColor, 0.5);
var i:int = 0;
// no need for enter frame event listeners
//addEventListener(Event.ENTER_FRAME, initSum);
//addEventListener(Event.ENTER_FRAME, drawPoints);
// add change or other corresponding events to UI
num2.addEventListener(Event.CHANGE, drawPoints);
num1.addEventListener(Event.CHANGE, drawPoints);
timeValue.addEventListener(Event.CHANGE, drawPoints);
riskValue.addEventListener(Event.CHANGE, drawPoints);
yearsValue.addEventListener(Event.CHANGE, drawPoints);
// initial settings
initSum();
//Calculate initial set values
function initSum(event:Event = null):void {
     var Dinit:Number = num2.value;
     var Pinit:Number = num1.value;
     var Cinit:Number = (timeValue.selectedData) * Dinit;
     var Rinit:Number = riskValue.selectedData;
     var Yinit:Number = yearsValue.selectedData;
     //Compound Interest P = Starting principal, C = contributions/year, R = interest rate as decimal.
     //P(1+R)Y + C[((1+R)Y+1 - (1+R))/R]
     //Formula converted intoActionscript = P*(Math.pow((1+R), Y)) + C*(((Math.pow((1+R),Y+1)) - (1+R))/R); break formula into separate parts
     var firstPartInit = Pinit * (Math.pow((1 + Rinit), Yinit));
     var secondPartInit = Math.pow((1 + Rinit), Yinit + 1).toFixed(2);
     var thirdPartInit = 1 + Rinit;
     var answerInit = firstPartInit +Cinit * ((secondPartInit - thirdPartInit) / Rinit);
     var answerInitFinal = answerInit.toFixed(0);
     commaCoderInit(answerInitFinal);
     // first call to draw points
     drawPoints();
//Format initial end result with commas
function commaCoderInit(yourNum):String {
     var numtoString1:String = new String();
     for (i = 0; i < yourNum.length; i++) {
          if ((yourNum.length-i)%3 == 0 && i != 0) {
               numtoString1 += ",";
          numtoString1 += yourNum.charAt(i);
     return result1_txt.text = numtoString1 + " €";
//Draw Current points on graph
function drawPoints(event:Event = null):void {
     var Dcurr:Number = num2.value;
     var Pcurr:Number = num1.value;
     var Ccurr:Number = (timeValue.selectedData) * Dcurr;
     var Rcurr:Number = riskValue.selectedData;
     var year:Number =  yearsValue.selectedData;
     var firstPartCurr:Number;
     var secondPartCurr:Number;
     var thirdPartCurr:Number;
     //Calculate Max value and ratio
     var firstPartMax:Number;
     var secondPartMax:Number;
     var thirdPartMax:Number;
     var answerMax:Number;
     var ratio:Number;
     var firstPartMax:Number;
     var secondPartMax:Number;
     var thirdPartMax:Number;
     var answerMax:Number;
     var ratio:Number;
     // point sprite
     var point:Point;
     //Create value loop array
     for (i = 0; i <= yearsValue.selectedData; i++) {
          firstPartCurr = Pcurr * (Math.pow((1 + Rcurr), i));
          secondPartCurr = Math.pow((1 + Rcurr), i + 1).toFixed(2);
          thirdPartCurr = 1 + Rcurr;
          answerCurr[i] = firstPartCurr + Ccurr * ((secondPartCurr - thirdPartCurr) / Rcurr);
          //Calculate Max value and ratio
          firstPartMax = Pcurr * (Math.pow((1 + Rcurr), year));
          secondPartMax = Math.pow((1 + Rcurr), year + 1).toFixed(2);
          thirdPartMax = 1 + Rcurr;
          answerMax = firstPartMax + Ccurr * ((secondPartMax - thirdPartMax) / Rcurr);
          ratio = (answerMax).toFixed(0) / 250;
          // now it is Point - not Sprite
          point = new Point(25 + i * (550 / yearsValue.selectedData), 675 - (answerCurr[i] / ratio));
          points.push(point);
     drawLines();
//Draw initial lines on graph
function drawLines():void {
     gr.clear();
     gr.moveTo(points[0].x, points[0].y);
     for (i = 0; i < points.length; i++) {
          gr.beginFill(graphColor);
          gr.drawCircle(points[i].x, points[i].y, 3);
          gr.endFill();
          gr.lineTo(points[i].x, points[i].y);