我想写个HIGHCHARTS，y值是读取arduino数值，x值是时间，目前在网路上参考的程式是这样，请问要怎么改呢?，谢谢大家
```javascript
Highcharts.setOptions({
global: {
useUTC: false
}
});
function activeLastPointToolip(chart) {
var points = chart.series[0].points;
chart.tooltip.refresh(points[points.length -1]);
}
var chart = Highcharts.chart('FlowContainer', {
chart: {
type: 'spline',
marginRight: 10,
events: {
load: function () {
var series = this.series[0],
chart = this;
activeLastPointToolip(chart);
setInterval(function () {
var x = (new Date()).getTime(), // 当前时间
y = Math.random(); // 随机值
series.addPoint([x, y], true, true);
activeLastPointToolip(chart);
}, 1000);
}
}
},
title: {
text: '动态模拟实时数据'
},
xAxis: {
type: 'datetime',
tickPixelInterval: 150
},
yAxis: {
title: {
text: null
}
},
tooltip: {
formatter: function () {
return '' + this.series.name + '
' +
Highcharts.dateFormat('%Y-%m-%d %H:%M:%S', this.x) + '
' +
Highcharts.numberFormat(this.y, 2);
}
},
legend: {
enabled: false
},
series: [{
name: '随机数据',
data: (function () {
// 生成随机值
var data = [],
time = (new Date()).getTime(),
i;
for (i = -19; i <= 0; i += 1) {
data.push({
x: time + i * 1000,
y: Math.random()
});
}
return data;
}())
}]
});
```