Google Charts : How do I change the order of pie chart slices? -


how change order of pie chart slices generation? here code.

var default_pie_chart_options = {         theme: 'material',         titletextstyle: { fontsize: 12 },         is3d: false,         pieslicetext: 'label',         colors: ['#8e142e','#c3ca21','#8a972b','#6ff522','#167d13'],         fontsize: 12,         piehole: 0.6,         piestartangle: 180,         height: 600,         chartarea: { width: '100%', height: '100%', left: 0, top: 100 },         legend: { position: 'top', maxlines: 1, textstyle: { fontsize: 12, bold: true, italic: false } }     }; var chartoptions = default_pie_chart_options;         chartoptions.colors = null;         var chartoverallpmmlevelcalculated = new google.visualization.chartwrapper({             'charttype': 'piechart',             'containerid': 'chartoverallpmmlevelcalculatedhtml',              options: chartoptions         }); function drawpiechart() {             var responsedatatable = leveltablechart.getdatatable();             var chartdatatable = new google.visualization.datatable();             chartdatatable.addcolumn('string', 'fiscal');             chartdatatable.addcolumn('number', 'level');             var chartdatatablerow = new array();             var rowcounter;             var levelvalue;             (rowcounter = 0; rowcounter < responsedatatable.getnumberofrows() ; rowcounter++) {                 var seek = 0 * 1;                 levelvalue = responsedatatable.getvalue(rowcounter, 1);                 if (levelvalue !== null) {                     chartdatatablerow[seek++] = "level " + levelvalue.tostring();                     chartdatatablerow[seek++] = responsedatatable.getvalue(rowcounter, 2);                 } else {                     chartdatatablerow[seek++] = null;                     chartdatatablerow[seek++] = null;                 }                 chartdatatable.addrow(chartdatatablerow);             }             chartoverallpmmlevelcalculated.setdatatable(chartdatatable);             chartoverallpmmlevelcalculated.draw();         }

i attached generated pie chart generated random level information. need display level 0 level 3 clockwise in pie chart slices.

enter image description here

sort datatable before drawing chart 

// sort data - first column data.sort([{column: 0}]);

see following working snippet... 

google.charts.load('current', {    callback: function () {      var data = google.visualization.arraytodatatable([        ['fiscal', 'level'],        ['level 3',     30],        ['level 1',     12],        ['level 2',     42],        ['level 0',     8],      ]);        var chart = new google.visualization.chartwrapper({        charttype: 'piechart',        containerid: 'chart_div',        datatable: data,        options: {          theme: 'material',          titletextstyle: { fontsize: 12 },          is3d: false,          pieslicetext: 'label',          fontsize: 12,          piehole: 0.6,          piestartangle: 180,          height: 600,          chartarea: { width: '100%', height: '100%', left: 0, top: 100 },          legend: { position: 'top', maxlines: 1, textstyle: { fontsize: 12, bold: true, italic: false } }        }      });        // sort data - first column      data.sort([{column: 0}]);        chart.draw();    },    packages:['corechart']  });
<script src="https://www.gstatic.com/charts/loader.js"></script>  <div id="chart_div"></div>


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