xCharts:基于D3的JavaScript图表库
jopen
10年前
xCharts是 一款基于D3的JavaScript图表库,xCharts的功能非常强大,不仅支持多种图表类型,而且拥有丰富的图表主题风格,并且非常漂亮。另 外,xCharts的设计非常灵活,配置也比较简单,加载速度也还不错,是一款开放性和可定制性都非常不错的JavaScript图表应用。
xCharts的特点
- 基于JavaScript,因此只要有浏览器即可使用,平台兼容性不错。
- 开放,可定制,因此配置相当灵活。
- 支持SVG格式,因此也可以方便地导出图表数据。
xCharts的使用
简单的柱形图
JavaScript代码:
var data = { "xScale": "ordinal", "yScale": "linear", "main": [ { "className": ".pizza", "data": [ { "x": "Pepperoni", "y": 4 }, { "x": "Cheese", "y": 8 } ] } ] }; var myChart = new xChart('bar', data, '#example1');
效果图:
线性图
JavaScript代码:
var data = { "xScale": "time", "yScale": "linear", "type": "line", "main": [ { "className": ".pizza", "data": [ { "x": "2012-11-05", "y": 1 }, { "x": "2012-11-06", "y": 6 }, { "x": "2012-11-07", "y": 13 }, { "x": "2012-11-08", "y": -3 }, { "x": "2012-11-09", "y": -4 }, { "x": "2012-11-10", "y": 9 }, { "x": "2012-11-11", "y": 6 } ] } ] }; var opts = { "dataFormatX": function (x) { return d3.time.format('%Y-%m-%d').parse(x); }, "tickFormatX": function (x) { return d3.time.format('%A')(x); } }; var myChart = new xChart('line', data, '#example3', opts);
效果图:
动画柱形图
JavaScript代码:
var errorBar = { enter: function (self, storage, className, data, callbacks) { var insertionPoint = xChart.visutils.getInsertionPoint(9), container, // Map each error bar into 3 points, so it's easier to draw as a single path // Converts each point to a triplet with y from (y - e) to (y + e) // It would be better to use the `preUpdateScale` method here, // but for this quick example, we're taking a shortcut eData = data.map(function (d) { d.data = d.data.map(function (d) { return [{x: d.x, y: d.y - d.e}, {x: d.x, y: d.y}, {x: d.x, y: d.y + d.e}]; }); return d; }), paths; // It's always a good idea to create containers for sets container = self._g.selectAll('.errorLine' + className)
xChart.setVis('error', errorBar);
var data = { "xScale": "ordinal", "yScale": "linear", "main": [ { "className": ".errorExample", "data": [ { "x": "Ponies", "y": 12 }, { "x": "Unicorns", "y": 23 }, { "x": "Trolls", "y": 1 } ] } ], "comp": [ { "type": "error", "className": ".comp.errorBar", "data": [ { "x": "Ponies", "y": 12, "e": 5 }, { "x": "Unicorns", "y": 23, "e": 2 }, { "x": "Trolls", "y": 1, "e": 1 } ] } ] };
效果图:
总结
xCharts的功能相当强大,如果你在自己的Web应用中需要使用图表,那么xCharts非常适合你,可以尝试一下。
项目主页:http://www.open-open.com/lib/view/home/1417939155886
译文链接:http://原网站已经失效/article/xcharts-d3-javascript-chart.html
翻译作者:码农网 – 小峰