[英]Amchart - Export to PNG file
我创建了一个 amchart 来绘制基于时间的区域。 我需要为此图表添加一个导出到图像选项。 下面显示了我的 amchart 代码。 将导出到图像选项添加到此图形需要哪些行
AmCharts.ready(function () {
// first we generate some random data
generateChartData();
// SERIAL CHART
chart = new AmCharts.AmSerialChart();
chart.pathToImages = "../amcharts/images/";
chart.dataProvider = chartData;
chart.categoryField = "date";
// data updated event will be fired when chart is first displayed,
// also when data will be updated. We'll use it to set some
// initial zoom
chart.addListener("dataUpdated", zoomChart);
// AXES
// Category
var categoryAxis = chart.categoryAxis;
categoryAxis.parseDates = true; // in order char to understand dates, we should set parseDates to true
categoryAxis.minPeriod = "mm"; // as we have data with minute interval, we have to set "mm" here.
categoryAxis.gridAlpha = 0.07;
categoryAxis.axisColor = "#DADADA";
// Value
var valueAxis = new AmCharts.ValueAxis();
valueAxis.gridAlpha = 0.07;
valueAxis.title = "Unique visitors";
chart.addValueAxis(valueAxis);
// GRAPH
var graph = new AmCharts.AmGraph();
graph.type = "line"; // try to change it to "column"
graph.title = "red line";
graph.valueField = "visits";
graph.lineAlpha = 1;
graph.lineColor = "#d1cf2a";
graph.fillAlphas = 0.3; // setting fillAlphas to > 0 value makes it area graph
chart.addGraph(graph);
// CURSOR
var chartCursor = new AmCharts.ChartCursor();
chartCursor.cursorPosition = "mouse";
chartCursor.categoryBalloonDateFormat = "JJ:NN, DD MMMM";
chart.addChartCursor(chartCursor);
// SCROLLBAR
var chartScrollbar = new AmCharts.ChartScrollbar();
chart.addChartScrollbar(chartScrollbar);
// WRITE
chart.write("chartdiv");
});
在将图表写入 DIV 之前,您应该能够添加以下内容。
"exportConfig":{
"menuTop": 0,
menuItems: [{
textAlign: 'center',
icon: 'images/graph_export.png',
iconTitle: 'Save chart as an image',
onclick:function(){},
items: [
{title:'JPG', format:'jpg'},
{title:'PNG', format:'png'},
{title:'SVG', format:'svg'}
]
}]
}
这将为您提供图表上的下载图标,以 JPG、PNG 或 SVG 格式下载。
试试这个代码:
chart.export = {
enabled: true,
position: "bottom-right"
}
chart.initHC = false;
chart.validateNow();
并且不要忘记包含所需的导出插件!
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