kernelDensity http://mapfw.tangshannanhu.com/iserver/services/spatialAnalysis-NanHuJingQuShiLiangTu/restjsr/spatialanalyst/datasets/%E8%BF%90%E5%8A%A8%E4%BC%91%E9%97%B2@%E5%8D%97%E6%B9%96%E6%99%AF%E5%8C%BA%E7%9F%A2%E9%87%8F%E5%9B%BE/densityanalyst/kernel