Ext饼图显示数值问题?

Question

Ext3 如何在饼图的每个扇区显示相应的数值啊
还有如何设置曲线图的X轴步长间距 
求高手解答！！

Answer 1

http://dev.sencha.com/deploy/ext-4.0.0/examples/#sample-3

Answer 2

    /***************饼状图区域开始****************/
    var categoryStore = new Ext.data.Store({
        autoLoad: true,
        proxy: new Ext.data.HttpProxy({
            url: 'ProgressControlReport.aspx?cmd=gressMap'
        }),
        reader: new Ext.data.ArrayReader({
            fields: ['categoryName', 'categoryData']
        })
    })
    categoryStore.load();    var maps = new Ext.Panel({
        title: '项目进度统计图',
        renderTo: 'piechartDiv',
        width: '254',
        layout: 'fit',
        items: {
            xtype: 'piechart',
            store: categoryStore,
            categoryField: 'categoryName',
            dataField: 'categoryData',
            listeners: {
                itemclick: function (o) { }
            },
            extraStyle:
            {
                legend:
                {
                    display: 'bottom',
                    padding: 3,
                    font:
                    {
                        family: 'Tahoma',
                        size: 11
                    }
                }
            }
        }
    });    /***********饼状图区域结束********/后台获取数据方法：
   #region 获取数据填充饼状图
            else if (GetString("cmd").Equals("gressMap"))
            {
                DataTable dt = new ReportBLL().GetSinglePrgessMap(GetString("unitId"), GetString("prjYear"), GetString("prjMonth"));
                StringBuilder str = new StringBuilder();
                str.Append("[");
                if (dt != null && dt.Rows.Count > 0)
                {
                    for (int i = 0; i < dt.Rows.Count; i++)
                    {
                        str.Append("['" + dt.Rows[i]["datalable"] + "','" + dt.Rows[i]["total"] + "'],");
                    }
                    string tempstr = str.ToString().Substring(0, str.ToString().Length - 1);
                    str.Length = 0;
                    str.Append(tempstr);
                }                
                str.Append("]");
                Response.Write(str.ToString());
                Response.End();
            }
            #endregion图形自动分配数值所占的百分比，个数以及名称。还有每个颜色代表的名称，并没有设置曲线图的X轴步长间距，是不是你还有什么特殊的需求？

Answer 3

EXT中的piechart饼图，其实是使用falsh绘图，你要是想改进就把那个swf文件下载了自己研究。查了piechart得属性、事件、方法没找到解决办法。