[j][1])],att);
                    features.push(newFeature)
                }
        
            }
            source.addFeatures(features)
            //创建热力图层
            var Heatmap = new ol.layer.Heatmap({
                source,
                blur,
                radius,
                weight:'weight'  //默认热力图层权值字段（0-1）
            });
            return Heatmap
        }

        function createFeature (coordinates,att) {
            var tFeature =new ol.Feat