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evangels
#1 Posted : Thursday, November 5, 2015 9:18:24 PM(UTC)
Rank: Member

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Joined: 7/30/2013(UTC)
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hi team,

I met a problem when using the data point label creating event, when I use Chrome, I need to interact on the chart with mouse wheel(actually to trigger the zoom in & zoom out action), then the event will trigger(in my case, all the labels will hide, except the last one ), or it will not, would you pls. help? thanks?

Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>
    dataPointLabelCreating Event Example - HTML5 jQuery Chart Plugin by jqChart
</title>
    <link rel="stylesheet" type="text/css" href="../../css/jquery.jqChart.css" />
    <link rel="stylesheet" type="text/css" href="../../css/jquery.jqRangeSlider.css" />
    <link rel="stylesheet" type="text/css" href="../../themes/smoothness/jquery-ui-1.10.4.css" />
    <script src="../../js/jquery-1.11.1.min.js" type="text/javascript"></script>
    <script src="../../js/jquery.mousewheel.js" type="text/javascript"></script>
    <script src="../../js/jquery.jqChart.min.js" type="text/javascript"></script>
    <script src="../../js/jquery.jqRangeSlider.min.js" type="text/javascript"></script>
    <!--[if IE]><script lang="javascript" type="text/javascript" src="../../js/excanvas.js"></script><![endif]-->
   
    <script lang="javascript" type="text/javascript">

        $(document).ready(function () {

            var background = {
                type: 'linearGradient',
                x0: 0,
                y0: 0,
                x1: 0,
                y1: 1,
                colorStops: [
                    { offset: 0, color: '#d2e6c9' },
                    { offset: 1, color: 'white' }
                ]
            };

            var fillStyle = {
                type: 'linearGradient',
                x0: 0,
                y0: 0,
                x1: 1,
                y1: 0,
                colorStops: [
                    { offset: 0, color: '#65c2e8' },
                    { offset: 0.49, color: '#55b3e1' },
                    { offset: 0.5, color: '#3ba6dc' },
                    { offset: 1, color: '#2794d4' }
                ]
            };
            
            $('#jqChart').bind('dataPointLabelCreating', function (event, data) {
                if(parseInt(data.context.series.data.length-1)!=parseInt(data.context.index)){
                    data.visible=false;
                }else{
                    data.visible=true;
                }
            });   
            
            $('#jqChart').jqChart({
                title: 'dataPointLabelCreating Event',
                border: { strokeStyle: '#6ba851' },
                background: background,
                animation: { duration: 1 },
                series: [
                    {
                        type: 'column',
                        title: 'Column',
                        data: [['A', 4600], ['B', 3500], ['C', 6800], ['D', 4000],
                               ['E', 2700], ['F', 8500], ['D', 4300], ['H', 2900]],
                        labels: {
                            fillStyle: 'red',
                            font: '11px sans-serif'
                        }
                    }
                ]
            });
        });
    </script>

</head>
<body>
    <div>
        <div id="jqChart" style="width: 500px; height: 300px;">
        </div>
    </div>
</body>
</html>
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Dragan
#2 Posted : Monday, November 9, 2015 8:28:34 AM(UTC)
Rank: Advanced Member

Groups: Administrators, DataVizJavaScript, jQueryChart, jQueryDV, MvcChart, Registered
Joined: 1/3/2011(UTC)
Posts: 483

Thanks: 0 times
Was thanked: 87 time(s) in 87 post(s)
You can use this function:

Code:
$('#jqChart').bind('dataPointLabelCreating', function (event, data) {
                if (data.context.series.data.length - 1 ==  data.context.index) {
                    data.text = '';
                }
            });
Best Regards,
Dragan Matek
jqChart Inc.
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