Angular + Google charts : ng-model not updating
<p>I have a simple google chart and embedded with Angular. The chart gets displayed, implies im able to bind data from angular to googlechart. However the problem is, if i edit a value in array (chart data source) chart is not getting updated.</p>

<p>Code :</p>

<pre><code>&lt;html&gt;
&lt;head&gt;
    &lt;!--Load the AJAX API--&gt;
    &lt;script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"&gt;&lt;/script&gt;
    &lt;script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.5.0/angular.js"&gt;&lt;/script&gt;

    &lt;script type="text/javascript"&gt;
        var myApp = angular.module("myApp", []);
        myApp.controller("myCnt", function ($scope) {
            $scope.dataArray = [
              ['Mushrooms', 3],
              ['Onions', 1],
              ['Olives', 1],
              ['Zucchini', 1],
              ['Pepperoni', 2]
            ];

            google.charts.load('current', { packages: ['corechart'] });
            google.charts.setOnLoadCallback(drawChart);

            function drawChart() {
                var data = new google.visualization.DataTable();
                data.addColumn('string', 'Topping');
                data.addColumn('number', 'Slices');
                data.addRows($scope.dataArray);

                // Set chart options
                var options = {
                    'title': 'How Much Pizza I Ate Last Night',
                    'width': 400,
                    'height': 300
                };

                // Instantiate and draw our chart, passing in some options.
                var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
                chart.draw(data, options);
            }
        });
    &lt;/script&gt;
&lt;/head&gt;

&lt;body ng-app="myApp" ng-controller="myCnt"&gt;
    &lt;input type="text" ng-model="dataArray[0][1]" /&gt;&lt;br /&gt;
    &lt;span ng-bind="dataArray[0][1]"&gt;&lt;/span&gt;
    &lt;div id="chart_div"&gt;&lt;/div&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p><strong>Edit 1:</strong>
Values of first array are edited through a text box in HTML. Im sure the edit is reflecting, as i can see the span element displaying updated value. Somehow the same value is not getting bind to the chart.</p>

<p>Do i need to load the chart again by calling chart.draw(data, options); If yes, then where should i be calling?</p>

<p>Thank you</p>