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Posted to commits@echarts.apache.org by GitBox <gi...@apache.org> on 2021/10/21 07:25:51 UTC
[GitHub] [echarts] Jeremyyang commented on issue #15817: Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'regions')
Jeremyyang commented on issue #15817:
URL: https://github.com/apache/echarts/issues/15817#issuecomment-948332345
the some error：Uncaught TypeError: Cannot read properties of undefined (reading 'regions')
跑的是这里的示例: https://echarts.apache.org/examples/zh/editor.html?c=scatterGL-gps&gl=1
```
<!DOCTYPE html>
<html style="height: 100%">
<head>
<meta charset="utf-8">
</head>
<body style="height: 100%; margin: 0">
<div id="container" style="height: 100%"></div>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/echarts@5.2.1/dist/echarts.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/echarts-gl/2.0.8/echarts-gl.min.js"></script>
<script type="text/javascript">
var ROOT_PATH =
'https://cdn.jsdelivr.net/gh/apache/echarts-website@asf-site/examples';
var app = {};
var chartDom = document.getElementById('container');
var myChart = echarts.init(chartDom);
var option;
var dataCount = 0;
var CHUNK_COUNT = 230;
// https://blog.openstreetmap.org/2012/04/01/bulk-gps-point-data/
function fetchData(idx) {
if (idx >= CHUNK_COUNT) {
return;
}
var dataURL = ROOT_PATH + '/data/asset/data/gps/gps_' + idx + '.bin';
var xhr = new XMLHttpRequest();
xhr.open('GET', dataURL, true);
xhr.responseType = 'arraybuffer';
xhr.onload = function (e) {
var rawData = new Int32Array(this.response);
var data = new Float32Array(rawData.length);
var addedDataCount = rawData.length / 2;
for (var i = 0; i < rawData.length; i += 2) {
data[i] = rawData[i + 1] / 1e7;
data[i + 1] = rawData[i] / 1e7;
}
myChart.appendData({
seriesIndex: 0,
data: data
});
fetchData(idx + 1);
};
xhr.send();
}
option = {
backgroundColor: '#000',
title: {
text: '10000000 GPS Points',
left: 'center',
textStyle: {
color: '#fff'
}
},
geo: {
map: 'world',
roam: true,
label: {
emphasis: {
show: false
}
},
silent: true,
itemStyle: {
normal: {
areaColor: '#323c48',
borderColor: '#111'
},
emphasis: {
areaColor: '#2a333d'
}
}
},
series: [
{
name: '弱',
type: 'scatterGL',
progressive: 1e6,
coordinateSystem: 'geo',
symbolSize: 1,
zoomScale: 0.002,
blendMode: 'lighter',
large: true,
itemStyle: {
color: 'rgb(20, 15, 2)'
},
postEffect: {
enable: true
},
silent: true,
dimensions: ['lng', 'lat'],
data: new Float32Array()
}
]
};
fetchData(0);
option && myChart.setOption(option);
</script>
</body>
</html>
```
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