var markers=new SuperMap.Layer.Markers("Markers",{});
var marker;
function processData(data) { //调用了processData函数
markers.clearMarkers(); //清空标注
var pointFeature;
var pointFeatures=[];
if (data != null && data.length >= 0) {
var picture;
$.each(data, function (index, info) { //遍历数据
var id = info.caseSystemId;
map.addLayer(markers);
//标记图层上添加标记