Java_Average_GWTHighcharts

[Velo]

[Shawn Quinn]

Greetings! There's nothing within the GWT Highcharts wrapper or Highcharts.js (that I know of) to run statistical methods on a series, but given that GWT is all Java you can certainly just write a simple method to calculate the average for you (similar to what is shown in that jsfiddle example). E.g.

    public static double getSeriesAverage(Series series) {
        Point[] points = series.getPoints();
        double sum = 0;
        for (Point point : points) {
            sum += point.getY().doubleValue();
        }
        return sum / points.length;
    }

Hope that helps.

[Velo]

[Shawn Quinn]

Yeah, you could create a new series for the average line and add it to the chart, or you may find "plot lines" useful for this kind of scenario. Example here:

http://www.moxiegroup.com/moxieapps/gwt-highcharts/apidocs/org/moxieapps/gwt/highcharts/client/PlotLine.html

[Velo]

[Shawn Quinn]

You'll need to put the Series that you're interested in running the average on in a variable first (e.g. Series series = chart.createSeries()...) and then call the "getSeriesAverage()" method after you have added the points to the series.

[Velo]

[Velo]

i did this:

        Series series=chart.createSeries()  
        .setName("London") 
        .setPoints(new Number[]  {
            3.9, 4.2, 5.7, 8.5, 11.9, 15.2, 17.0, 16.6, 14.2, 10.3, 6.6, 4.8 
        })
    ; chart.addSeries(series);
    getSeriesAverage(series);

and now i do't know yet, how to draw this line for average with value,