EXTJS3.4多条折线图有间断，不能连续显示

Question

如题，我用EXT3.4做了个多条折线图的显示程序。但是显示的时候，同一种颜色的折线，如果对应横坐标的值不连续，就显示有间断了。怎么让它连续起来啊？有没有高手帮忙解决下啊。

Answer 1

前台显示：
var record = Ext.data.Record.create( [ {
    name : 'dtestTime'
}, {
    name : 'cprojectResult'
}, {
    name : 'creference'
},{
    name : 'cprojectName'
},{
    name : 'cunit'
},{
    name : 'lprojectId'
},{
    name : 'line1chart'
},{
    name : 'line2chart'
},{
    name : 'line3chart'
},{
    name : 'line4chart'
}]);
var reader = new Ext.data.JsonReader( {

root : 'result'
}, record)
var proxy = new Ext.data.HttpProxy( {
url : __ctxPath + "/workroom/lineChartProject.do?lnumberid=2",
    method : 'POST'
})
var store = new Ext.data.Store( {
    proxy : proxy,
    reader : reader,
    listeners : {
        load : function(e, records) {
         var recordcount = store.getCount(); 
        }
    }
})
store.load();

this.Panel=new Ext.Panel({
        title: 'ExtJS.com Visits Trend, 2007/2008 (No styling)',
        //renderTo: 'container',
        width:500,
        height:300,
        layout:'fit',
        region : "center",
        
        items: {
            xtype: 'linechart',
            store: store,
            xField: 'dtestTime',
            sort:true,
            //yField: 'cprojectResult',
            series: [{//列
                    type: "line", 
                    displayName: "收缩压",
                    yField: "line1chart",
                    style: {
                        color:'00FF00'
                    }
                   },
                   {
                    type: "line", 
                    displayName: "舒张压",
                    yField: "line2chart",
                    style: {
                        color:'FFFF00'
                    }
                   },
                   {
                       type: "line", 
                       displayName: "平均压",
                       yField: "line3chart",
                       style: {
                           color:'CC0000'
                       }
                   },
                   {
                      type: "line", 
                      displayName: "脉率",
                      yField: "line4chart",
                      style: {
                          color:'FF00FF'
                      }
                   }
                                               
                ],
                extraStyle:    
                {    
                    legend:    
                    {    
                        display: 'bottom',    
                        padding: 5,    
                        font:    
                        {    
                            family: 'Tahoma',    
                            size: 13    
                        }    
                    }    
                },
listeners: {
itemclick: function(o){
var rec = store.getAt(o.index);
Ext.example.msg('Item Selected', 'You chose {0}.', rec.get('name'));
}
}
        }
    });