Add new series to the top of a highcharts stacked column chart

Question

I'm trying to control the order in which new (after first render) series are added to a stacked column chart in Highcharts. Right now, if you simply use addSeries, the newly added series is added to the bottom of the stack. Here's a simplified version of what I'm doing

var chart = new Highcharts.Chart({

    chart: {
        type: 'column',
        renderTo: 'container'
    },

    xAxis: {
        categories: ['Jan', 'Feb', 'Mar']
    },

    plotOptions: {
        series: {
            stacking: 'normal'
        }
    },

    series: [{
        name: 'base',
        data: [10, 20, 30]
    }, {
        name: 'sec',
        data: [30, 20, 10]
    }]
});

var i = 0;
$('#add').on('click', function (e) {
    chart.addSeries({
        data: [32, 43, 42],
        name: ++i,
        index: 0 //??????
    });
});

Here's a fiddle of this: http://jsfiddle.net/6bCBf/

Any one can think of a way to reverse/control where Highcharts inserts the new series?

I've tried setting the index of the new series to 0, but that does nothing. Setting it to -1 adds the new series to the bottom of the array, but then that 'stacking' does not work properly

Answer 1

You can set index and zIndex to keep order between layers, then add serie with appropriate parameters.

Example: http://jsfiddle.net/6bCBf/5/

var chart = new Highcharts.Chart({

    chart: {
        type: 'column',
        renderTo: 'container'
    },

    xAxis: {
        categories: ['Jan', 'Feb', 'Mar']
    },

    plotOptions: {
        series: {
            stacking: 'normal'
         }
     },    

    series: [
        {
            name: 'base',
            data: [10, 20, 30],
            index:2,
            zIndex:10
        },
        {
            name: 'sec',
            data: [30, 20, 10],
            index:1,
            zIndex:9
        }
    ]
},function(chart){



    $('#add').on('click', function (e) {

        chart.addSeries({
            data: [32, 43, 42],
            index: 0,
            zIndex:1
        });
    });


});