HighCharts：可以汇总系列数据并在标题中显示？

Question

I'm looking for an answer if it's possible to sum the HighCharts series and show it in the title? I'm using JSON data for the series, so if the data looks like this:

[0,0,0,1,1,1,2,2,2,3,3,3]

The sum should of course be: 18.

I've tried asking Google but I haven't found anything. I know I could handle it elsewhere but it would be nice to handle it directly inside the HighCharts script.

Thx.

/CRH

Answer 1

Because you pass an object literal to Highcharts, you best bet might be to do something like this:

http://jsfiddle.net/WRa43/

var data = [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4];

$('#container').highcharts({
    series: [{
        data: data
    }],

    title: {
        text: "Total is " + data.reduce(function(i,a) { return i+a; })
    }
});

Reference for array.reduce

Answer 2

How about summing it in Javascript and then using the result when creating the title?

var sum = 0;
for(var i in series)
    sum += i;

Then, just set the title:

chart = new Highcharts.Chart({
    ...

    title: {
        text: 'SUM: ' + sum
    },

    ...
)};

That should work, right?