series.trendline.period Number (default: 2)

The number of intervals to take when calculating averages. The value should be an integer greater than 2.

The period setting is supported only when series.type is set to "movingAverageTrendline".

Example - set the moving average trendline period

<div id="stock-chart"></div>
<script>
$("#stock-chart").kendoStockChart({
    dataSource: {
        data: [{
            date: new Date("2021-01-01"),
            price: 111
        }, {
            date: new Date("2021-02-01"),
            price: 141
        }, {
            date: new Date("2021-03-01"),
            price: 151
        }, {
            date: new Date("2021-04-01"),
            price: 121
        }, {
            date: new Date("2021-05-01"),
            price: 111
        }, {
            date: new Date("2021-06-01"),
            price: 111
        }, {
            date: new Date("2021-07-01"),
            price: 145
        }, {
            date: new Date("2021-08-01"),
            price: 125
        }, {
            date: new Date("2021-09-01"),
            price: 145
        }, {
            date: new Date("2021-10-01"),
            price: 135
        }, {
            date: new Date("2021-11-01"),
            price: 155
        }, {
            date: new Date("2021-12-01"),
            price: 185
        }]
    },
    dateField: "date",
    series: [{
        name: "Price",
        type: "line",
        field: "price"
    }, {
        name: "Average",
        type: "movingAverageTrendline",
        for: "Price",
        trendline: {
            period: 3
        }
    }],
    legend: {
        visible: true,
        position: 'bottom'
    }
});
</script>