一个不错的js图表框架

http://amcharts.com/

一套基于html5，javascript的图表控件，基本上能够满足大部分应用需求。有多个版本，包括javascript,Flex,WPF & Silverlight，Flash等。其中js版本基本上能够满足大部分需求，包括有柱状图，饼图，折线（曲线）图等等。大部分需求都可以简单设置即可使用。

使用方法比较简单：

<script src="js/amcharts.js" type="text/javascript"></script>
<script src="/lib/amfallback.js" type="text/javascript"></script>
<script type="text/javascript">
                         
                                AmCharts.ready(function()
                                {                         
                         
                            var vars = {
                                path:"/lib/files/",
                                data_file: "/lib/amline/data/home.php",
                                settings_file: "/lib/amline/settings/home.xml"
                                };

                                var amfallback = new AmCharts.AmFallback();
                                amfallback.dataFile = vars.data_file;
                                amfallback.pathToImages = "/lib/images/";
                                amfallback.settingsFile = vars.settings_file;
                                amfallback.type = "line";
                                amfallback.write("flashcontent1");
                                });
</script>

就可以很漂亮的生成一个曲线图了：

更漂亮一点的图：

refer: http://amcharts.com/docs/v.2/javascript_reference