breq - 8 months ago 42

jQuery Question

How I can add difference between two points?

For example for 'monday' Jane has 1, John has 3 points so John should have info like "(-70%)", in Wednesday John has 3, Jane has 4 so it should be "(+125%)"

Info should be at line which is nearest right side.

jsfiddle

`$(function () {`

$('#container').highcharts({

chart: {

type: 'area',

inverted: true

},

title: {

text: 'Average fruit consumption during one week'

},

subtitle: {

style: {

position: 'absolute',

right: '0px',

bottom: '10px'

}

},

legend: {

layout: 'vertical',

align: 'right',

verticalAlign: 'top',

x: -150,

y: 100,

floating: true,

borderWidth: 1,

backgroundColor: '#FFFFFF'

},

xAxis: {

categories: [

'Monday',

'Tuesday',

'Wednesday',

'Thursday',

'Friday',

'Saturday',

'Sunday'

]

},

yAxis: {

title: {

text: 'Number of units'

},

labels: {

formatter: function() {

return this.value;

}

},

min: 0

},

plotOptions: {

area: {

fillOpacity: 0.5

}

},

series: [{

name: 'John',

data: [3, 4, 3, 5, 4, 10, 12]

}, {

name: 'Jane',

data: [1, 3, 4, 3, 3, 5, 4]

}]

});

});

Answer

I don't understand calculation: - Jane = 1, - John = 3, so label = (-70%)

However, this is way to get dataLabel for Jane and John:

```
formatter: function(){
var secondY = this.series.chart.series[1].yData[this.point.x],
firstY = this.y;
return this.y;
}
```

jsFiddle: http://jsfiddle.net/7gvuA/