Echarts markPoint 全部值为0时不显示的解决方案

{"markPoint": {"data": [{"type": "max", "label": {"formatter": "我的位置", "position": 'top' }, "symbol": 'image://data:image/png;base64,iVBK5CYII=', "symbolSize": 20, "symbolOffset": [0, -20] }], "silent": function (dataIndex, data) { var value = data[dataIndex].value; for (var i = 0; i < value.length; i++) { if (value[i] !== 0) { return false; } } return true; } }}