let layers={'全球境界': 'ibo','地形注记': 'cta','地形晕渲': 'ter','影像注记': 'cia','影像底图': 'img','矢量注记': 'cva','矢量底图': 'vec'} let projs={'经纬度投影': 'EPSG:4490','球面墨卡托投影': 'EPSG:900913'} let matrixSets={'经纬度投影': 'c','球面墨卡托投影':...
'经纬度投影': 'EPSG:4490', '球面墨卡托投影': 'EPSG:900913' } let matrixSets = { '经纬度投影': 'c', '球面墨卡托投影': 'w' } let projection = getProjection(projs[options.proj]); let projectionExtent = projection.getExtent(); let origin = projectionExtent ? getTopLeft(projectionExtent...