//克里金插值数据封装
            let paramsK={
                mapCenter:[114.360456, 30.538622],
                maxValue:100,
                krigingModel:'exponential',//model还可选'gaussian','spherical'
                krigingSigma2:0,
                krigingAlpha:100,
                canvasAlpha:0.5,//canvas图层透明度
                colors:["#006837", "#1a9850", "#66bd63", "#a6d96a", "#d9ef8b", "#ffffbf","#fee08b", "#fdae61", "#f46d43", "#d73027", "#a50026"],
            };
                          //亳州                //六安                    //合肥                    //阜阳
            let points=[[115.78919,33.863132],[116.515884,31.765982],[117.228779,31.826871],[115.807588,32.915904],[116.396301,32.877101]]
            //逆时针,左 下 右 上  (观测点最边缘的经纬度)
            let extent = [115.68919,31.665982,117.328779,33.963132]
            let values=[3,20,28,8,23],lngs=[],lats=[];
            let maxValue = getMaxMin(values,'max');
            let minValue = getMaxMin(values,'min');
            points.forEach(function(v){
                lngs.push(v[0])
                lats.push(v[1])
            })
            //变差图;取样间隔有关的变分量                  //"exponential", 0, 100
            let variogram=kriging.train(values,lngs,lats, paramsK.krigingModel,paramsK.krigingSigma2,paramsK.krigingAlpha);
            //绘制多边形
            let polygons=[];
            polygons.push([[extent[0],extent[1]],[extent[0],extent[3]],[extent[2],extent[3]],[extent[2],extent[1]]]);
            //范围经度右-范围经纬左
            let grid=kriging.grid(polygons,variogram,(extent[2]-extent[0])/80);
 
            let myChart = echarts.init(document.getElementById("container"));
            let COLORS = ["#006837", "#1a9850", "#66bd63", "#a6d96a", "#d9ef8b", "#ffffbf","#fee08b", "#fdae61", "#f46d43", "#d73027", "#a50026"]
            let lngExtent = [extent[1], extent[3]];
            let latExtent = [extent[0], extent[2]];
            let cellCount = [grid[0].length, grid.length];
            //单元格坐标
            let cellSizeCoord = [(latExtent[1] - latExtent[0]) / cellCount[1],(lngExtent[1] - lngExtent[0]) / cellCount[0]];
            let data = []
            for(let i=0;i<grid[0].length-1;i++){ //宽
                for(let j=0;j<grid.length-1;j++){  //高
                    let d = [j,i,grid[j][i].toFixed(0)]
                    // let d = [j,i,grid[i][j].toFixed(0)]
                    data.push(d);
                }
            }
/**
             * 获取数组中的最大值和最小值函数
             * */
            function getMaxMin(arr,param) {
                try {
                    if (param == 'max') {
                        if(typeof( Math.max.apply(null, arr))!='number'){
                            return "Error:element in arr is not a number!";
                        }else{
                            return Math.max.apply(null, arr);
                        }
                    }else if (param == 'min') {
                        if(typeof( Math.min.apply(null, arr))!='number'){
                            return "Error:element in arr is not a number!";
                        }else{
                            return Math.min.apply(null, arr);
                        }
                    }else{
                        return "Error:param is unsupported!";
                    }
                } catch (e) {
                    return "Error:"+e;
                }
            }
            function renderItem(params, api) {
                let lngIndex = api.value(0);
                let latIndex = api.value(1);
                let pointLeftTop = getCoord(params, api, lngIndex, latIndex);
                let pointRightBottom = getCoord(params, api, lngIndex + 1, latIndex + 1);
                return {
                    type: 'rect',
                    shape: {
                        x: pointLeftTop[0],
                        y: pointLeftTop[1],
                        width: pointRightBottom[0] - pointLeftTop[0],
                        height: pointRightBottom[1] - pointLeftTop[1]
                    },
                    style: api.style({
                        stroke: 'rgba(0,0,0,0)' //笔画,网格线
                    }),
                    styleEmphasis: api.styleEmphasis() //风格强调
                };
            }
 
            function getCoord(params, api, lngIndex, latIndex) {
                var coords = params.context.coords || (params.context.coords = []);
                var key = lngIndex + '-' + latIndex;
 
                // bmap returns point in integer, which makes cell width unstable.
                //返回整数形式的点，这使得单元格宽度不稳定。
                // So we have to use right bottom point. 所以我们必须使用正确的底线
                return coords[key] || (coords[key] = api.coord([+(latExtent[0] + lngIndex * cellSizeCoord[0]).toFixed(6),+(lngExtent[0] + latIndex * cellSizeCoord[1]).toFixed(6)
                ]));
            }
            let map = null
            $.ajaxSettings.async = false;    //(同步执行)   获取地图样式
            //$.get('lib/custom_map_config.json', function (data) {
            //    mapStyle = data
            //})
            $.ajaxSettings.async = true;    //(异步执行)
            option = {
                tooltip: {},
                visualMap: {
                    inverse: true,
                    top: 10,
                    left: 10,
                    min: minValue,
                    max: maxValue,
                    inRange: {
                        color: COLORS,
                        opacity: 0.7
                    }
                },
                bmap: {
                    center: [117.283042, 31.86119],
                    zoom: 8,
                    roam: true,
                    mapStyle: {styleJson:mapStyle}
                },
                series: [
                    {
                        type: 'custom',
                        coordinateSystem: 'bmap',
                        renderItem: renderItem,
                        animation: false,
                        emphasis: {//强调
                            itemStyle: {
                                color: 'yellow'
                            }
                        },
                        encode: {
                            tooltip: 2
                        },
                        data: data
                    }
                ],
            };
            myChart.setOption(option)