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Tagged: charts labels too many and small

This topic contains 4 replies, has 2 voices, and was last updated by Dimitar 12 years, 8 months ago.

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Maximum Labels for Pie Chart Posts

November 27, 2012 at 5:37 pm Maximum Labels for Pie Chart #11556

Member

I have a pie chart that has 20+ sections/slices. The slices range from 50%, 20%, 10%, 9% then a bunch down to 1% How can I limit the number of labels shown… say that top 5. The problem is… the bottom 10 sections are so small the labels start overlap. Any suggestions.

November 28, 2012 at 6:54 am Maximum Labels for Pie Chart #11575

Dimitar

Participant

Hello brewsterjones,

To show labels only on some slices, you should use the formatFunction property of series. In the following example, labels to slices with a value less than 10% are not shown.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="en">
<head>
    <title id='Description'>jqxChart Pie Series Example</title>
    <link rel="stylesheet" href="../../jqwidgets/styles/jqx.base.css" type="text/css" />
    <script type="text/javascript" src="../../scripts/jquery-1.8.2.min.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxcore.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxchart.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxdata.js"></script>
    <script type="text/javascript">
        $(document).ready(function () {
            // prepare chart data as an array
            var source =
            {
                datatype: "csv",
                datafields: [
                    { name: 'Browser' },
                    { name: 'Share' }
                ],
                url: '../sampledata/desktop_browsers_share_dec2011.txt'
            };
            var dataAdapter = new $.jqx.dataAdapter(source, { async: false, autoBind: true, loadError: function (xhr, status, error) { alert('Error loading "' + source.url + '" : ' + error); } });
            // prepare jqxChart settings
            var settings = {
                title: "Desktop browsers share in Dec 2011",
                description: "(source: wikipedia.org)",
                enableAnimations: true,
                showLegend: false,
                legendPosition: { left: 520, top: 140, width: 100, height: 100 },
                padding: { left: 5, top: 5, right: 5, bottom: 5 },
                titlePadding: { left: 0, top: 0, right: 0, bottom: 10 },
                source: dataAdapter,
                colorScheme: 'scheme02',
                seriesGroups:
                    [
                        {
                            type: 'pie',
                            showLabels: true,
                            series:
                                [
                                    {
                                        dataField: 'Share',
                                        displayText: 'Browser',
                                        labelRadius: 100,
                                        initialAngle: 15,
                                        radius: 130,
                                        centerOffset: 0,
                                        formatSettings: { sufix: '%', decimalPlaces: 1 },
                                        formatFunction: function (value) {
                                            if (value >= 10) {
                                                return value;
                                            };
                                        }
                                    }
                                ]
                        }
                    ]
            };
            // setup the chart
            $('#jqxChart').jqxChart(settings);
        });
    </script>
</head>
<body class='default'>
    <div id='host' style="margin: 0 auto; width: 699px; height: 400px;">
        <div id='jqxChart' style="width: 680px; height: 400px; position: relative; left: 0px;
            top: 0px;">
        </div>
    </div>
</body>
</html>

Best Regards,
Dimitar

jQWidgets team
http://www.jqwidgets.com/

November 28, 2012 at 3:33 pm Maximum Labels for Pie Chart #11616

brewsterjones

Member

Thanks… but could not get it to work. when i added in the
formatFunction: function (value) {
if (value >= 10) {
return value;
};

everything quit showing.

November 28, 2012 at 3:44 pm Maximum Labels for Pie Chart #11617

brewsterjones

Member

Was missing a closing bracket }… but now can’t get the FormatSettings to work properly… giving me a percentage 10 decimals out…

November 29, 2012 at 8:58 am Maximum Labels for Pie Chart #11690

Dimitar

Participant

Hi brewsterjones,

Please post a code snippet, so that we may be of help.

Best Regards,
Dimitar

jQWidgets team
http://www.jqwidgets.com/

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