kernelDensity http://mapfw.tangshannanhu.com/iserver/services/spatialAnalysis-NanHuJingQuShiLiangTu/restjsr/spatialanalyst/datasets/%E9%83%BD%E5%B8%82%E9%AB%98%E9%80%9F%E8%B7%AF@%E5%8D%97%E6%B9%96%E6%99%AF%E5%8C%BA%E7%9F%A2%E9%87%8F%E5%9B%BE/densityanalyst/kernel