Line chart with date series not applying sum aggregate

[David]

I'm using a date series in a line chart with week and month groupings. It is currently displaying each point as what appears to be an average of data for that time period. I need it to display as a sum. 

Here is my initial chart code:

$("#overall-chart").kendoChart({
        title: {
            visible: false
        },
        dataSource: SPIData['trends']['dataUnfiltered'],
        legend: {
            visible: false
        },
        seriesDefaults: {
            aggregate: "sum"
        },
        series: updateSeries,
        valueAxes: valueAxes,
        valueAxis: {
            majorGridLines: {
                visible: false
            },
            minorGridLines: {
                visible: false
            },
            line: {
                visible: false
            }

        },
        categoryAxis: {
            majorGridLines: {
                visible: false
            },
            minorGridLines: {
                visible: false
            },
            majorTicks: {
                visible: false
            },
            minorTicks: {
                visible: false
            },
            //baseUnit: "months"
            baseUnit: bUnit
        },
        seriesClick: onSeriesClick,
    });

I have it set to swap out the chart to different data elements in the array using a radio, here is the push for that

        updateSeries.push({
            name: checkedVals[i],
            type: "line",
            axis: "metric",
            field: checkedVals[i],
            categoryField: "date",
            color: "#479ec2",
            aggregate: "sum"
        });


When I inspect in console I can see the options.series.aggregate is set to "sum", but it still does not show the summation on the chart. Is there something else I need to do?

[Iliana Dyankova]

Hi Greg,

By design Kendo UI Chart does not support dynamic changes of its configuration options and in order to achieve the expected result you should refresh the chart:

//get reference to the chart widget
var chart =  $("#chart").data("kendoChart");
//get chart options
var chartOptions = chart.options;
//add series
var updateSeries = chartOptions.series.push({
   //....
});
//refresh the chart
chart.refresh();

Regards,
Iliana Nikolova
Telerik

[David]

Iliana, 

I am already using chart.refresh(); following the code I supplied to you. The dynamic change is not the problem, the problem is I have sum set to begin with and it is not showing the points as a summation.

[Iliana Dyankova]

Hello Greg,

I am not sure what causes the issue in your application - I tried to reproduce it but to no avail (jsBin example). Is it possible to provide an isolated runnable example which demonstrates the issue and which I can test locally? This way I would be able to check what exactly is going wrong and advice you further. Thank you in advance for your time and cooperation.

Regards,
Iliana Nikolova
Telerik