我正在尝试创建一个与时间相关的图表。我想给每个子弹以年,月,日,小时,分钟和秒。但是,如果用户放大,我希望X轴不显示分钟和秒。
我的问题:必须为chart.dataDateFormat和数据的“date”参数指定日期格式?
到目前为止,这是我的代码。请让我知道我应该更改的内容。
谢谢。
<script type="text/javascript">
var chart;
var chartData = [
{
"date": "2012-01-01",
"value": 0.24
},
{
"date": "2012-01-02",
"value": 0.28
},
{
"date": "2012-01-03",
"value": 0.34
},
{
"date": "2012-01-04",
"value": 0.30
},
{
"date": "2012-01-05",
"value": 0.27
}
];
AmCharts.ready(function () {
// SERIAL CHART
chart = new AmCharts.AmSerialChart();
chart.pathToImages = "/images/";
chart.dataProvider = chartData;
chart.dataDateFormat = "YYYY-MM-DD";
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 = "hh"; // our data is daily, so we set minPeriod to DD
categoryAxis.gridAlpha = 0.1;
categoryAxis.minorGridAlpha = 0.1;
categoryAxis.axisAlpha = 0;
categoryAxis.minorGridEnabled = true;
categoryAxis.inside = true;
// value
var valueAxis = new AmCharts.ValueAxis();
valueAxis.tickLength = 0;
valueAxis.axisAlpha = 0;
valueAxis.showFirstLabel = false;
valueAxis.showLastLabel = false;
chart.addValueAxis(valueAxis);
// GRAPH
var graph = new AmCharts.AmGraph();
graph.dashLength = 3;
graph.lineColor = "gray";
graph.valueField = "value";
graph.dashLength = 3;
graph.bullet = "round";
graph.lineThickness = 0;
graph.balloonText = "[[category]]<br><b><span style='font-size:14px;'>value:[[value]]</span></b>";
chart.addGraph(graph);
// CURSOR
var chartCursor = new AmCharts.ChartCursor();
chart.addChartCursor(chartCursor);
// SCROLLBAR
var chartScrollbar = new AmCharts.ChartScrollbar();
chart.addChartScrollbar(chartScrollbar);
// HORIZONTAL GREEN RANGE
var guide = new AmCharts.Guide();
guide.value = 0.26;
guide.toValue = 0.32;
guide.fillColor = "#00CC00";
guide.inside = true;
guide.fillAlpha = 0.2;
guide.lineAlpha = 0;
valueAxis.addGuide(guide);
// TREND LINES
// first trend line
var trendLine = new AmCharts.TrendLine();
// note,when creating date objects 0 month is January, as months are zero based in JavaScript.
trendLine.initialDate = new Date(2012, 0, 1, 0,59); // 12 is hour - to start trend line in the middle of the day
trendLine.finalDate = new Date(2012, 0, 23, 24);
trendLine.initialValue = 0.28;
trendLine.finalValue = 0.28;
trendLine.lineColor = "#CC0000";
chart.addTrendLine(trendLine);
// WRITE
chart.write("chartdiv");
});
</script>
最佳答案
我终于在一夜之间想通了。我将解决方案提供给想要的人。
chartData必须为:
chart.dataDateFormat必须为:
希望它能帮助某人。