我正在使用amCharts(amStock)将股票图表显示为折线图。
我想在图表上添加一个新点时找到一个动画,所以看起来它只是画画。现在发生的事情就是弹出它。
这是我的代码:
var chart;
var chartData = [];
var chartCursor;
var day = 0;
var firstDate = new Date();
firstDate.setDate(firstDate.getDate() - 500);
// generate some random data, quite different range
function generateChartData() {
for (day = 0; day < 50; day++) {
var newDate = new Date(firstDate);
newDate.setDate(newDate.getDate() + day);
var visits = Math.round(Math.random() * 40) - 20;
chartData.push({
date: newDate,
visits: visits
});
}
}
// create chart
AmCharts.ready(function() {
// generate some data first
generateChartData();
// SERIAL CHART
chart = new AmCharts.AmSerialChart();
chart.pathToImages = "http://www.amcharts.com/lib/images/";
chart.marginTop = 0;
chart.marginRight = 10;
chart.autoMarginOffset = 5;
chart.zoomOutButton = {
backgroundColor: '#000000',
backgroundAlpha: 0.15
};
chart.dataProvider = chartData;
chart.categoryField = "date";
// AXES
// category
var categoryAxis = chart.categoryAxis;
categoryAxis.parseDates = true; // as our data is date-based, we set parseDates to true
categoryAxis.minPeriod = "DD"; // our data is daily, so we set minPeriod to DD
categoryAxis.dashLength = 1;
categoryAxis.gridAlpha = 0.15;
categoryAxis.axisColor = "#DADADA";
// value
var valueAxis = new AmCharts.ValueAxis();
valueAxis.axisAlpha = 0.2;
valueAxis.dashLength = 1;
chart.addValueAxis(valueAxis);
// GRAPH
var graph = new AmCharts.AmGraph();
graph.title = "red line";
graph.valueField = "visits";
graph.bullet = "round";
graph.bulletBorderColor = "#FFFFFF";
graph.bulletBorderThickness = 2;
graph.lineThickness = 2;
graph.lineColor = "#b5030d";
graph.negativeLineColor = "#0352b5";
graph.hideBulletsCount = 50; // this makes the chart to hide bullets when there are more than 50 series in selection
chart.addGraph(graph);
// CURSOR
chartCursor = new AmCharts.ChartCursor();
chartCursor.cursorPosition = "mouse";
chart.addChartCursor(chartCursor);
// SCROLLBAR
var chartScrollbar = new AmCharts.ChartScrollbar();
chartScrollbar.graph = graph;
chartScrollbar.scrollbarHeight = 40;
chartScrollbar.color = "#FFFFFF";
chartScrollbar.autoGridCount = true;
chart.addChartScrollbar(chartScrollbar);
// WRITE
chart.write("chartdiv");
// set up the chart to update every second
setInterval(function () {
// normally you would load new datapoints here,
// but we will just generate some random values
// and remove the value from the beginning so that
// we get nice sliding graph feeling
// remove datapoint from the beginning
chart.dataProvider.shift();
// add new one at the end
day++;
var newDate = new Date(firstDate);
newDate.setDate(newDate.getDate() + day);
var visits = Math.round(Math.random() * 40) - 20;
chart.dataProvider.push({
date: newDate,
visits: visits
});
chart.validateData();
}, 1000);
});
<script src="http://www.amcharts.com/lib/amcharts.js" type="text/javascript"></script>
<div id="chartdiv" style="width: 100%; height: 340px;"></div>
答案 0 :(得分:0)
获得amCharts的支持后,这是不可能的。
我担心目前我们不支持增量更新。无论何时添加数据点,图表都需要重新评估整个数据并重新绘制。它会保留当前的缩放和位置,因此您仍然可以获得持续更新的感觉。