html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

anychart.onDocumentReady(function () {

    var chart = anychart.column();

​

    var series = chart.line([

        {x: 'January', value: 2},

        {x: 'February', value: 5},

        {x: 'March', value: 3},

        {x: 'April', value: 6},

        {x: 'May', value: 4}

    ]);

​

    var rendering = series.rendering();

    rendering.point(drawer);

​

    // Enable zero value.

    rendering.needsZero(true);

​

    chart.title('Enable zero value for the series');

    chart.container('container');

    chart.draw();

});

function drawer() {

    if (this.missing) {

        return;

    }

    var shapes = this.getShapesGroup(this.pointState);

​

    shapes['stroke']

        .moveTo(this.x, this.zero)

        .lineTo(this.x, this.value - 70)

        .lineTo(this.x + 50, this.value - 40)

        .lineTo(this.x, this.value)

        .lineTo(this.x + 50, this.value + 30)

        .close(this.x, this.zero);

}