<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>ECharts</title>
<!-- 引入 echarts.js -->
<script src="js/echarts.min.js"></script>
</head>
<body>
<!-- 为ECharts准备一个具备大小（宽高）的Dom -->
<div id="main" style="width: 600px;height:400px;"></div>
<script type="text/javascript">
// 基于准备好的dom，初始化echarts实例
var myChart = echarts.init(document.getElementById('main'));
var option;
var upColor = '#ec0000';
var upBorderColor = '#8A0000';
var downColor = '#00da3c';
var downBorderColor = '#008F28';
var dataCount = 2e5;
var data = generateOHLC(dataCount);
var option = {
dataset: {
source: data
},
title: {
text: 'Data Amount: ' + echarts.format.addCommas(dataCount)
},
tooltip: {
trigger: 'axis',
axisPointer: {
type: 'line'
}
},
toolbox: {
feature: {
dataZoom: {
yAxisIndex: false
},
}
},
grid: [{
left: '10%',
right: '10%',
bottom: 200
},
{
left: '10%',
right: '10%',
height: 80,
bottom: 80
}
],
xAxis: [{
type: 'category',
scale: true,
boundaryGap: false,
// inverse: true,
axisLine: {
onZero: false
},
splitLine: {
show: false
},
splitNumber: 20,
min: 'dataMin',
max: 'dataMax'
},
{
type: 'category',
gridIndex: 1,
scale: true,
boundaryGap: false,
axisLine: {
onZero: false
},
axisTick: {
show: false
},
splitLine: {
show: false
},
axisLabel: {
show: false
},
splitNumber: 20,
min: 'dataMin',
max: 'dataMax'
}
],
yAxis: [{
scale: true,
splitArea: {
show: true
}
},
{
scale: true,
gridIndex: 1,
splitNumber: 2,
axisLabel: {
show: false
},
axisLine: {
show: false
},
axisTick: {
show: false
},
splitLine: {
show: false
}
}
],
dataZoom: [{
type: 'inside',
xAxisIndex: [0, 1],
start: 10,
end: 100
},
{
show: true,
xAxisIndex: [0, 1],
type: 'slider',
bottom: 10,
start: 10,
end: 100,
handleIcon: 'M10.7,11.9H9.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4h1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z',
handleSize: '105%'
}
],
visualMap: {
show: false,
seriesIndex: 1,
dimension: 6,
pieces: [{
value: 1,
color: upColor
}, {
value: -1,
color: downColor
}]
},
series: [{
type: 'candlestick',
itemStyle: {
color: upColor,
color0: downColor,
borderColor: upBorderColor,
borderColor0: downBorderColor
},
encode: {
x: 0,
y: [1, 4, 3, 2]
}
},
{
name: 'Volumn',
type: 'bar',
xAxisIndex: 1,
yAxisIndex: 1,
itemStyle: {
color: '#7fbe9e'
},
large: true,
encode: {
x: 0,
y: 5
}
}
]
};
function generateOHLC(count) {
var data = [];
var xValue = +new Date(2011, 0, 1);
var minute = 60 * 1000;
var baseValue = Math.random() * 12000;
var boxVals = new Array(4);
var dayRange = 12;
for(var i = 0; i < count; i++) {
baseValue = baseValue + Math.random() * 20 - 10;
for(var j = 0; j < 4; j++) {
boxVals[j] = (Math.random() - 0.5) * dayRange + baseValue;
}
boxVals.sort();
var idxRandom = Math.random();
var openIdx = Math.round(Math.random() * 3);
var closeIdx = Math.round(Math.random() * 2);
if(closeIdx === openIdx) {
closeIdx++;
}
var volumn = boxVals[3] * (1000 + Math.random() * 500);
// ['open', 'close', 'lowest', 'highest', 'volumn']
// [1, 4, 3, 2]
data[i] = [
echarts.format.formatTime('yyyy-MM-dd\nhh:mm:ss', xValue += minute), +boxVals[openIdx].toFixed(2), // open
+boxVals[3].toFixed(2), // highest
+boxVals[0].toFixed(2), // lowest
+boxVals[closeIdx].toFixed(2), // close
volumn.toFixed(0),
getSign(data, i, +boxVals[openIdx], +boxVals[closeIdx], 4) // sign
];
}
return data;
function getSign(data, dataIndex, openVal, closeVal, closeDimIdx) {
var sign;
if(openVal > closeVal) {
sign = -1;
} else if(openVal < closeVal) {
sign = 1;
} else {
sign = dataIndex > 0
// If close === open, compare with close of last record
?
(data[dataIndex - 1][closeDimIdx] <= closeVal ? 1 : -1)
// No record of previous, set to be positive
:
1;
}
return sign;
}
}
myChart.setOption(option);
</script>
</body>
</html>
