如何使用json在amcharts线图中绘制多条线？
问题描述 投票：0回答：1
我有一个AM Charts折线图，其中包含从URL加载的多个图形。这与dataloader为数据提取json的效果很好，但是我正在尝试获取脚本来加载动态“图形”数据。我尝试了解决方案HERE，但无法在浏览器中呈现。
编辑-我修复了javascript（现在有一个额外的括号），现在它在浏览器中呈现，数据点在那里，但是不可见，并且没有画线。
有人有什么建议吗？
css
<!-- Styles -->
<style>
html, body {
width: 100%;
height: 100%;
margin: 0px;
}
#chartdiv {
width: 100%;
height: 100%;
}
</style>'
javascript
<!-- Chart code -->
<script>
var chart = AmCharts.makeChart("chartdiv", {
"type": "serial",
"theme": "light",
"dataLoader": {
"url": "http://127.0.0.1:5000/rate_json.json",
"format": "json",
"complete": function(chart) {
//get potential valueFields after filtering out the categoryField
var valueFields = Object.keys(chart.dataProvider[0]).filter(function(value) {
return value !== chart.categoryField;
})
//create the graphs
valueFields.forEach(function(valueField) {
chart.graphs.push({
"valueField": valueField,
"type": "serial",
"balloonText": "[[category]]: <b>[[value]]</b>",
"fillAlphas": 0.8,
"lineAlphas": 0.2
})
});
}
},
"valueAxes": [{
"gridColor": "#FFFFFF",
"gridAlpha": 0.2,
"dashLength": 0
}],
"gridAboveGraphs": true,
"startDuration": 1,
"graphs": [],
"chartCursor": {
"categoryBalloonEnabled": false,
"cursorAlpha": 0,
"zoomable": false
},
"categoryField": "month",
"categoryAxis": {
"gridPosition": "start",
"gridAlpha": 0
},
"legend": {},
"export": {
"enabled": true
},
"menu": [ {
"class": "export-main",
"menu": [ "PNG", "JPG", "CSV" ]
} ]
});
</script>
html
<!-- Resources -->
<script src="//www.amcharts.com/lib/3/amcharts.js"></script>
<script src="//www.amcharts.com/lib/3/serial.js"></script>
<script src="//www.amcharts.com/lib/3/themes/light.js"></script>
<script type="text/javascript" src="https://www.amcharts.com/lib/3/plugins/export/export.js"></script>
<link rel="stylesheet" href='https://www.amcharts.com/lib/3/plugins/export/export.css' type='text/css' media='all'/>
<script src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/t-160/dataloader-3.19.0.min.js"></script>
<div id="chartdiv"></div>
如果我使用以下javascript，它可以正常工作，但我需要能够动态添加/删除商店
<!-- Chart code -->
<script>
var chart = AmCharts.makeChart("chartdiv", {
"type": "serial",
"theme": "light",
"dataLoader": {
"url": "http://127.0.0.1:5000/rate_json.json",
"format": "json"
},
"valueAxes": [{
"gridColor": "#FFFFFF",
"gridAlpha": 0.2,
"dashLength": 0
}],
"gridAboveGraphs": true,
"startDuration": 1,
"graphs": [{
"title": "Store 1216",
"balloonText": "[[title]]: <b>[[value]]</b>",
"bullet": "round",
"bulletSize": 10,
"bulletBorderColor": "#ffffff",
"bulletBorderAlpha": 1,
"bulletBorderThickness": 2,
"lineThickness": 3,
"valueField": "1216"
}, {
"title": "Store 6528",
"balloonText": "[[title]]: <b>[[value]]</b>",
"bullet": "round",
"bulletSize": 10,
"bulletBorderColor": "#ffffff",
"bulletBorderAlpha": 1,
"bulletBorderThickness": 2,
"lineThickness": 3,
"valueField": "6528"
},
{
"title": "Store 230",
"balloonText": "[[title]]: <b>[[value]]</b>",
"bullet": "round",
"bulletSize": 10,
"bulletBorderColor": "#ffffff",
"bulletBorderAlpha": 1,
"bulletBorderThickness": 2,
"lineThickness": 3,
"valueField": "230"
},{
"title": "Store 6538",
"balloonText": "[[title]]: <b>[[value]]</b>",
"bullet": "round",
"bulletSize": 10,
"bulletBorderColor": "#ffffff",
"bulletBorderAlpha": 1,
"bulletBorderThickness": 2,
"lineThickness": 3,
"valueField": "6538"
},{
"title": "Store 6514",
"balloonText": "[[title]]: <b>[[value]]</b>",
"bullet": "round",
"bulletSize": 10,
"bulletBorderColor": "#ffffff",
"bulletBorderAlpha": 1,
"bulletBorderThickness": 2,
"lineThickness": 3,
"valueField": "6514"
},{
"title": "Store 1297",
"balloonText": "[[title]]: <b>[[value]]</b>",
"bullet": "round",
"bulletSize": 10,
"bulletBorderColor": "#ffffff",
"bulletBorderAlpha": 1,
"bulletBorderThickness": 2,
"lineThickness": 3,
"valueField": "1297"
},
{
"title": "Store 6299",
"balloonText": "[[title]]: <b>[[value]]</b>",
"bullet": "round",
"bulletSize": 10,
"bulletBorderColor": "#ffffff",
"bulletBorderAlpha": 1,
"bulletBorderThickness": 2,
"lineThickness": 3,
"valueField": "6299"
},{
"title": "Store 5830",
"balloonText": "[[title]]: <b>[[value]]</b>",
"bullet": "round",
"bulletSize": 10,
"bulletBorderColor": "#ffffff",
"bulletBorderAlpha": 1,
"bulletBorderThickness": 2,
"lineThickness": 3,
"valueField": "5830"
},{
"title": "Average",
"balloonText": "[[title]]: <b>[[value]]</b>",
"bullet": "round",
"bulletSize": 10,
"bulletBorderColor": "#ffffff",
"bulletBorderAlpha": 1,
"bulletBorderThickness": 2,
"lineThickness": 3,
"valueField": "Average"
}],
"chartCursor": {
"categoryBalloonEnabled": false,
"cursorAlpha": 0,
"zoomable": false
},
"categoryField": "month",
"categoryAxis": {
"gridPosition": "start",
"gridAlpha": 0
},
"legend": {},
"export": {
"enabled": true
},
"menu": [ {
"class": "export-main",
"menu": [ "PNG", "JPG", "CSV" ]
} ]
});
</script>
数据
[{"month": "February", "1216": 22.8, "6528": 23.65, "230": 23.61, "6538": 23.43, "6514": 23.21, "1297": 23.14, "6299": 23.11, "5830": 22.71, "Average": 23.21}, {"month": "March", "1216": 20.01, "6528": 22.61, "230": 23.67, "6538": 22.54, "6514": 22.91, "1297": 23.59, "6299": 13.87, "5830": 22.7, "Average": 21.49}, {"month": "April", "1216": 24.67, "6528": 24.64, "230": 22.7, "6538": 40.89, "6514": 38.18, "1297": 41.98, "6299": 23.19, "5830": 38.8, "Average": 37.51}, {"month": "May", "1216": 22.8, "6528": 23.65, "230": 23.61, "6538": 23.43, "6514": 23.21, "1297": 23.14, "6299": 23.11, "5830": 22.71, "Average": 23.21}, {"month": "June", "1216": 20.01, "6528": 22.61, "230": 23.67, "6538": 22.54, "6514": 22.91, "1297": 23.59, "6299": 13.87, "5830": 22.7, "Average": 21.49}, {"month": "July", "1216": 21.67, "6528": 21.64, "230": 25.7, "6538": 40.89, "6514": 38.18, "1297": 41.98, "6299": 23.19, "5830": 38.8, "Average": 37.51}, {"month": "August", "1216": 22.8, "6528": 23.65, "230": 23.61, "6538": 23.43, "6514": 23.21, "1297": 23.14, "6299": 23.11, "5830": 22.71, "Average": 23.21}, {"month": "Sept", "1216": 20.01, "6528": 22.61, "230": 23.67, "6538": 22.54, "6514": 22.91, "1297": 23.59, "6299": 13.87, "5830": 22.7, "Average": 21.49}, {"month": "Oct", "1216": 14.67, "6528": 16.64, "230": 27.7, "6538": 20.9, "6514": 22.18, "1297": 21.84, "6299": 15.19, "5830": 18.8, "Average": 21.99}]
[工作示例：
1个回答
0
投票
投票
问题是您如何创建图形-AmGraph对象中没有type: "serial"，因为该值用于统计图类型。在AmGraph对象中，可以将type设置为“ line”，“ column”，“ step”，“ smoothedLine”，“ candlestick”和“ ohlc”。固定类型将固定您的图表。
type"complete": function(chart) {
//get potential valueFields after filtering out the categoryField
var valueFields = Object.keys(chart.dataProvider[0]).filter(function(value) {
return value !== chart.categoryField;
})
//create the graphs
valueFields.forEach(function(valueField) {
chart.graphs.push({
"valueField": valueField,
"title": valueField, //added to show labels next to legend markers
"type": "line", //type should be line, not serial
"balloonText": "[[category]]: <b>[[value]]</b>",
"lineAlphas": 0.2
})
});
}
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