title: {
          text: '清大云点亮中国',
          subtext: 'Tsingda.Cloud',
          sublink: 'http://www.eee114.com',
          x: 'center',
          y: 'top',
          textStyle: {
            color: '#fff'
          }
        }

toolbox: {
          show: true,
          feature: {
            mark: { show: true },
            dataView: { show: true, readOnly: false },
            restore: { show: true },
            saveAsImage: { show: true }
          }
        }

legend: {
          x: 'left',
          y: 'top',
          data: ['在线', '离线'],//在线和离线对应的是series的名字
          selectedMode: false,//选中悬浮
          textStyle: {
            color: '#fff'
          }
        }

series: [
          //默认
          {
            name: '底层模版',
            type: 'map',
            mapType: 'china',
            data: provinceMap,
            geoCoord: source,
            itemStyle: {
              normal: {
                color: bgColor,
                borderColor: "#eee",
                label: {
                  show: true,
                  textStyle: {
                    color: "#fff"
                  }
                }
              }, emphasis: { color: "rgba(128, 128, 128, 0.5)" }
            },
          }

markPoint: {//动态标记
          large: true,//这个选项，悬浮自动失效
          symbolSize: 2,
          itemStyle: {
            normal: {
              shadowBlur: 2,
              shadowColor: 'rgba(37, 140, 249, 0.8)',
              color: onColor
            }
          },
          data: []
        }

 var myChart = echarts.init(document.getElementById('main'));
 var option={};
 myChart.setOption(option);

$.get("/map/GetOffMap", function (data) {
         
          for (var i in data) {
            option.series[0].geoCoord[data[i].longitude + "_" + data[i].latitude] = [parseFloat(data[i].longitude), parseFloat(data[i].latitude)];
            option.series[1].markPoint.data.push({ name: data[i].longitude + "_" + data[i].latitude });
          }

          myChart.setOption(option);