   {
                    start: 7,
                    size: 12
                }
            ]
        },
        event: {
            onMouseClick: function (item) {
                //能获取当前点的信息
            }
        },
        data: data.map(function (item, index) {
            item.name = '散点' + index;
            item.count = item.count || index;
            return item;
        })
    });
    inmap.add(overlay);
</script>