添加图片

var imgstatic = new ol.source.ImageStatic({
    url: _url,
    projection: 'EPSG:3857',
    crossOrigin: '',
    imageExtent: ol.proj.transformExtent([_scope[0], _scope[3], _scope[2], _scope[1]], 'EPSG:4326', 'EPSG:3857')
})
var radarLayer = new ol.layer.Image({
    source: imgstatic,
    imgdatatype: _id,
    id: _id
})

_map.addLayer(radarLayer);